Just one day after Facebook responded to an ongoing anti-Semitic advertising controversy, both Google and Twitter have become embroiled in the same debate concerning oversight and moderation on the web’s pervasive and powerful ad platforms.

Google’s ad tech, the main contributor to its parent company Alphabet’s roughly $100 billion in annual revenue, lets advertisers target search users by what phrases they type into the query field. A report from BuzzFeed News today found that Google’s ad platform permitted advertisers to sell ads next to anti-Semetic and racist queries, including “Jewish parasite,” “the evil Jew,” and “black people ruin everything.”

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