As American feminists came together in 2017 to protest Donald Trump, Russia’s disinformation machine set about deepening the divides among them.

By Ellen Barry @ NYTimes.com, Sept. 18, Updated 12:39 p.m. ET

[....]But then something shifted, seemingly overnight. What she saw on Twitter that Monday was a torrent of focused grievance that targeted her. In 15 years as an activist, largely advocating for the rights of Muslims, she had faced pushback, but this was of a different magnitude. A question began to form in her mind: Do they really hate me that much?

That morning, there were things going on that Ms. Sarsour could not imagine.

More than 4,000 miles away, organizations linked to the Russian government had assigned teams to the Women’s March. At desks in bland offices in St. Petersburg, using models derived from advertising and public relations, copywriters were testing out social media messages critical of the Women’s March movement, adopting the personas of fictional Americans.

They posted as Black women critical of white feminism, conservative women who felt excluded, and men who mocked participants as hairy-legged whiners. But one message performed better with audiences than any other.

It singled out an element of the Women’s March that might, at first, have seemed like a detail: Among its four co-chairs was Ms. Sarsour, a Palestinian American activist whose hijab marked her as an observant Muslim [....]