"We don’t have nearly enough information to see the big picture and know what speech platforms are taking down. For the most part, we only find out when the speakers themselves learn that their posts or accounts have disappeared and choose to call public attention to it. But the idea that platforms’ rules are biased — and that this undermines democracy — isn’t new, and it isn’t unique to conservatives.
Last year, for example, 70 social justice groups signed a letter to Facebook saying that African Americans and other minority groups were being unfairly silenced while the platform turned a blind eye to racist speech."