Google CEO Sundar Pichai said in an Axios interview on Sunday that YouTube is not "where we want to be" in terms of regulating harmful content on its platform.
Pichai said YouTube is trying to rank videos by quality in the same way it ranks results on Google.
He said it is both a "computer science problem" and a "hard societal problem" for the company.
It follows the row over YouTube's approach to Steven Crowder, a right-wing YouTuber who targeted Vox journalist Carlos Maza with homophobic slurs.
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Google CEO Sundar Pichai admitted in an interview on Sunday that when it comes to reining in harmful content, YouTube is not keeping up.