The problem of X as a source of hate and a threat to democracy is back at the top of the policy agenda. Elon Musk's social media platform circulated a large amount of false information as well as images of extreme violence during the recent terror attack in Israel. A European Commissioner, Thierry Breton, said that content probably was illegal in Europe and threatened X with fines. That standoff is likely to drag on for a while. But there's another European on Musk's case. His name is Imran Ahmed and he's already done much to hold X, and Musk, to account. Imran, who's British, runs a research and advocacy non-profit: The Center for Countering Digital Hate. The Center campaigns to get social media platforms to suspend or remove harmful accounts and stop advertisers spending money at sites spreading harmful content. And whereas Musk has kept his exchanges with Breton cordial, Musk has treated Imran like, well, vermin. The tension between Musk and Imran began after the Centre published its Toxic Twitter report in February. That report said that Musk had allowed large numbers of bad actors — Neo-Nazis, white supremacists, misogynists and conspiracists — back onto the platform with the goal of getting more eyeballs and advertising dollars. Now X is suing Imran's Center for losses amounting to tens of millions of dollars in advertising and other costs. How X's lawsuit in a California court pans out remains to be seen. But the discomfort Imran has already inflicted on Musk shows that David still can take on Goliath. And Imran's approach also holds lessons for regulators, like Mr. Breton, for the battles ahead. By way of disclosure: a board member at EU Scream also serves as a member of the board of the Center for Countering Digital Hate.