While we don't have an option to block a user, if you believe the video/channel violating our community guidelines you can always report it by following these steps: https://goo.gl/4z6ui1 . Hope this helps.
The thing is, @TeamYouTube , there are COUNTLESS reports being made of him, reporting videos of him, and of his behaviour towards others! He's spreading hate, and I thought you guys were against that stuff.. This has gone on for long enough, without us hearing from you guys..