Yeah I read something about that at work. Apparently some people on Tumblr planned to raid 4chan for like two months openly like they weren't going to catch wind or something, and were going to "shut it down", and when they did /b/ and /pol/ flooded Tumblr tags (mostly self harm, feminism, lgbt, depression, anxiety, etc type tags) with pictures of crazy porn and real life gore and other random fucked up shit and the Tumblr folks started having meltdowns talking about how fucked up it was and was giving them panic attacks and like what the fuck else did you expect to happen? lol