What is 4chan, site where threats to Mike Chitwood were posted?(02)

What is 4chan, site where threats to Mike Chitwood were posted?(02)

Image gallery: 4chan Leaked Celebrity

Christchurch shootings: The rising new threat of far-right violence - BBC News 4Chan Man Gets Year in Prison for Cyber Attack on Scientology Fox News What is 4chan, site where threats to Mike Chitwood were posted?