It started with childish name-calling on Twitter two weeks ago, when Elon Musk called my organisation “evil” and me personally a “rat”. It has since escalated to a lawsuit filed against the Center for Countering Digital Hate (CCDH), which I founded and run, in a California court last week. The CCDH exists to research online hate and disinformation, and hold social media companies accountable for the erosion of human rights and civil liberties. Our mission is to stem the tide of racism, antisemitism, harms to children, climate denial, anti-LGBTQ+ hate, health misinformation and many other dangers to society. Last week,...