Marketers watching the postmortem of Facebook’s role in last year’s election mess are getting a new appreciation for the social networkand some new worries.

Facebook hasn’t suffered financially since it said Russian front groups used it to sow discord and misinformation around the presidential election. Last week, it both sent its general counsel to testify before critical members of Congress and reported record ad revenue: more than $10 billion in just the third quarter. But advertisers are starting to wonder whether they’re creating a monster.

“What we’re seeing is a rare peek behind the curtain,” says one executive at an agency holding company, speaking on condition of anonymity. “Whether you’re pro-Trump or