The lawsuit on Monday comes as Musk and X, facing specific allegations that they endorsed and promoted antisemitic content on the platform, try to quell a recent exodus of advertisers. The complaint contends that an internal investigation found that Media Matters used accounts for its research that bypassed “X’s ad filter for new users” and followed only accounts “known to produce extreme, fringe content” and “accounts owned by X’s big-name advertisers.” The complaint further alleges that Media Matters “resorted to endlessly scrolling and refreshing its unrepresentative, hand-selected feed … until it finally received pages containing the result it wanted: controversial...