There were rumours around the social network Reddit, you may became aware about. There were some activities cleaning up posts, which may infringe others. Being one of the oldest social networks with a userbase one may describe by internet activists at least in part, the userbase of Reddit protests against these activities.
Now there is Voat, a social network with a similar approach like Reddit by primarily being a news sharing site. Usually there is no need to compare Voat and Reddit, but as Voat claims to save free speech a lot of users from Reddit now use Voat and have reestablished their user base there. The Verge has a most comprehensive article about the happenings, about Voat in general and its rise by users coming from Reddit. It is at the same time a lecture about free speech at the internet today: Welcome to Voat: Reddit killer, troll haven, and the strange face of internet free speech.