Earier this week, he published an open letter, saying "we do not tolerate hate, racism, and violence, and while we have work to do to fight these on our platform, our values are clear."

Ellen Pao, a former interim CEO of Reddit, slammed Huffman's comments.

You don't get to say BLM when reddit nurtures and monetizes white supremacy and hate all day long," she tweeted, referring to a popular subreddit supportive of President Donald Trump, where users often share racist, misogynistic, homophobic and conspiracy content.