A few weeks ago, I sat in a movie theater and grinned. Anne Hathaway was in ‘‘The Intern,’’ perched on a hotel bed in a hotel robe, eating from a can of overpriced nuts, having tea and freaking out. What would happen if she divorced her sweet, selfless stay-at-home dad of a husband? Would she ever meet anybody else? And if she didn’t, she would have no one to be buried next to — she’d be single for all eternity. And weren’t the problems in her marriage a direct result of her being a successful businesswoman — she was there but never quite present? ‘‘The Intern’’ is a Nancy Meyers movie, and these sorts of cute career-woman meltdowns are the Eddie Van Halen guitar solos of her romantic comedies.

But what’s funny about that scene — what had me grinning — is the response of the person across the bed from Hathaway. After listening to her tearful rant, this person has had enough: Don’t you dare blame yourself or your career! Actually, the interruption begins, ‘‘I hate to be the feminist, of the two of us. … ’’ Hate to be because the person on the other side of the bed isn’t Judy Greer or Brie Larson. It’s not Meryl Streep or Susan Sarandon. It’s someone not far from the last person who comes to mind when you think ‘‘soul-baring bestie.’’ It’s Robert freaking De Niro, portrayer of psychos, savages and grouches no more.

On that bed with Hathaway, as her 70-year-old intern, he’s not Travis Bickle or the human wall of intolerance from those Focker movies. He’s Lena Dunham. The attentiveness and stern feminism coming out of his mouth are where the comedy is. And while it’s perfectly obvious what Meyers is doing to De Niro — girlfriending him — that doesn’t make the overhaul any less effective. The whole movie is about the subtle and obvious ways in which men have been overly sensitized and women made self-estranged through breadwinning. It’s both a plaint against the present and a pining for the past, but also an acceptance that we are where we are.

And where are we? On one hand: in another of Nancy Meyers’s bourgeois pornographies. On the other: in the midst of a great cultural identity migration. Gender roles are merging. Races are being shed. In the last six years or so, but especially in 2015, we’ve been made to see how trans and bi and poly-ambi-omni- we are. If Meyers is clued into this confusion, then you know it really has gone far, wide and middlebrow. We can see it in the instantly beloved hit ‘‘Transparent,’’ about a family whose patriarch becomes a trans woman whose kids call her Moppa, or in the time we’ve spent this year in televised proximity to Caitlyn Jenner, or in the browning of America’s white founding fathers in the Broadway musical ‘‘Hamilton,’’ or in the proliferating clones that Tatiana Maslany plays on ‘‘Orphan Black,’’ which mock the idea of a true or even original self, or in Amy Schumer's comedic feminism, which reconsiders gender confusion: Do uncouthness, detachment and promiscuity make her a slut, or a man?

We can see it in the recently departed half-hour sketch comedy ‘‘Key & Peele,’’ which took race as a construct that could be reshuffled and remixed until it seemed to lose its meaning. The sitcom ‘‘Black-ish’’ likewise makes weekly farcical discourse out of how much black identity has warped — and how much it hasn’t — over 50 years and across three generations. ‘‘Unbreakable Kimmy Schmidt’’ turns selfhood into a circus, introducing us to a lower-middle-class Native American teenager who eventually succeeds at becoming a rich white lady, and to other characters who try out new selves every 10 minutes, as if they’re auditioning for ‘‘Snapchat: The Musical.’’ Last month, Ryan Adams released a remake of Taylor Swift’s album ‘‘1989,’’ song for song, as a rock record that combines a male voice with a perspective that still sounds like a woman’s, like Lindsey Buckingham trying on Stevie Nicks’s clothes. Dancing on the fringes of mainstream pop are androgynous black men like Le1f, Stromae and Shamir.

What started this flux? For more than a decade, we’ve lived with personal technologies — video games and social-media platforms — that have helped us create alternate or auxiliary personae. We’ve also spent a dozen years in the daily grip of makeover shows, in which a team of experts transforms your personal style, your home, your body, your spouse. There are TV competitions for the best fashion design, body painting, drag queen. Some forms of cosmetic alteration have become perfectly normal, and there are shows for that, too. Our reinventions feel gleeful and liberating — and tied to an essentially American optimism. After centuries of women living alongside men, and of the races living adjacent to one another, even if only notionally, our rigidly enforced gender and racial lines are finally breaking down. There’s a sense of fluidity and permissiveness and a smashing of binaries. We’re all becoming one another. Well, we are. And we’re not.

In June, the story of a woman named Rachel Dolezal began its viral spread through the news. She had recently been appointed president of the local chapter of the N.A.A.C.P. in Spokane, Wash. She had been married to a black man, had two black sons and was, by most accounts, a black woman. Her white biological parents begged to differ. The ensuing scandal resurrected questions about the nature of identity — what compelled Dolezal to darken her skin, perm her hair and pass in reverse? She might not have been biologically black, but she seemed well past feeling spiritually white.

Some people called her ‘‘transracial.’’ Others found insult in her masquerade, particularly when the country’s attention was being drawn, day after day, to how dangerous it can be to have black skin. The identities of the black men and women killed by white police officers and civilians, under an assortment of violent circumstances, remain fixed.

But there was something oddly compelling about Dolezal, too. She represented — dementedly but also earnestly — a longing to transcend our historical past and racialized present. This is a country founded on independence and yet comfortable with racial domination, a country that has forever been trying to legislate the lines between whiteness and nonwhiteness, between borrowing and genocidal theft. We’ve wanted to think we’re better than a history we can’t seem to stop repeating. Dolezal’s unwavering certainty that she was black was a measure of how seriously she believed in integration: It was as if she had arrived in a future that hadn’t yet caught up to her.

It wasn’t so long ago that many Americans felt they were living in that future. Barack Obama’s election was the dynamite that broke open the country. It was a moment. It was the moment. Obama was biological proof of some kind of progress — the product of an interracial relationship, the kind that was outlawed in some states as recently as 1967 but was normalized. He seemed to absolve us of original sin and take us past this stupid, dangerous race stuff. What if suddenly anything was possible? What if we could be and do whatever and whoever we wanted? In that moment, the country was changing. We were changing.

Before Obama ran for president, when we tended to talk about racial identity, we did so as the defense of a settlement. Black was understood to be black, nontransferably. Negro intellectuals — Ralph Ellison and Albert Murray and James Baldwin, for starters — debated strategies for equality and tolerance. Some of them asserted that to be black was also to be American, even if America begged to differ. For most of those many decades, blackness stood in opposition to whiteness, which folded its arms and said that was black people’s problem. But Obama became everybody’s problem. He was black. He was white. He was hope. He was apocalypse. And he brought a lot of anxiety into weird relief. We had never really had a white president until we had a black one.

This radical hope, triggered by Obama, ushered in a period of bi- and transracial art — art that probed the possibility that we really had transcended race, but also ridiculed this hope with an acid humor. During Obama's past year in office, those works of art have taken on an even darker, more troubled tone as we keep looking around and seeing how little has really changed.

When the Dolezal story broke, I was partway through Nell Zink’s ‘‘Mislaid,’’ one of the four new satirical novels of race I read this year — Jess Row’s ‘‘Your Face in Mine,’’ Paul Beatty’s ‘‘The Sellout’’ and Mat Johnson’s ‘‘Loving Day’’ were the others. (I also read Fran Ross’s long-lost, recently reissued ‘‘Oreo.’’) But Zink’s was the only one that felt like an energy reading of Dolezal. Zink’s white heroine, Peggy, has run off with her daughter, Mireille, and decided to take the birth certificate of a dead black girl named Karen Brown and use it for Mireille, while changing her own name to Meg.

The next year, Karen was 4 years old going on 5 and still blond. Nonetheless registering her for first grade as a black 6-year-old was easy as pie.

Maybe you have to be from the South to get your head around blond black people. Virginia was settled before slavery began, and it was diverse. There were tawny black people with hazel eyes. Black people with auburn hair, skin like butter and eyes of deep blue-green. Blond, blue-eyed black people resembling a recent chairman of the N.A.A.C.P.