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J.K. Rowling urged her followers to “stand together” and “challenge bigots” following Donald Trump’s surprising win in the presidential election.

The Harry Potter author had began election night with a plea that the “good kind” of history be made in Trump’s battle against Hillary Clinton. Following the results, and an evening of attacks from online trolls, Rowling began calling Twitter users out for their rhetoric.

“I’ve been called bitch, ‘libtard’ and plenty more tonight. Quite proud really; who’d want these people’s approval?” she wrote, referencing Trump supporters who had attack her online. After one Rowling follower told her to stop giving the trolls attention, she explained why that wasn’t going to happen. “I know you mean well, but tonight of all nights I’m going to say it. Ignoring spite, and hate, and bullying, doesn’t work,” she wrote. “The easy thing is to be silenced because you don’t want the insults. The easy thing is to look the other way when it’s happening to others. The easy thing is to keep your head down & let the bullies run amok. The right thing to do is to challenge racism, misogyny and hatred.”

In a later tweet, she added, “We stand together. We stick up for the vulnerable. We challenge bigots. We don’t let hate speech become normalized. We hold the line.”

Read Rowling’s tweets below.