People who haven’t lived their whole lives as women, whether Ms. Jenner or Mr. Summers, shouldn’t get to define us. That’s something men have been doing for much too long. And as much as I recognize and endorse the right of men to throw off the mantle of maleness, they cannot stake their claim to dignity as transgender people by trampling on mine as a woman.

Their truth is not my truth. Their female identities are not my female identity. They haven’t traveled through the world as women and been shaped by all that this entails. They haven’t suffered through business meetings with men talking to their breasts or woken up after sex terrified they’d forgotten to take their birth control pills the day before. They haven’t had to cope with the onset of their periods in the middle of a crowded subway, the humiliation of discovering that their male work partners’ checks were far larger than theirs, or the fear of being too weak to ward off rapists…

The “I was born in the wrong body” rhetoric favored by other trans people doesn’t work any better and is just as offensive, reducing us to our collective breasts and vaginas. Imagine the reaction if a young white man suddenly declared that he was trapped in the wrong body and, after using chemicals to change his skin pigmentation and crocheting his hair into twists, expected to be embraced by the black community…

But as the movement becomes mainstream, it’s growing harder to avoid asking pointed questions about the frequent attacks by some trans leaders on women’s right to define ourselves, our discourse and our bodies. After all, the trans movement isn’t simply echoing African-Americans, Chicanos, gays or women by demanding an end to the violence and discrimination, and to be treated with a full measure of respect. It’s demanding that women reconceptualize ourselves.