They are not only here but at Reddit too and elsewhere. And if we start like this, why not banning American (attackers) because they promote gun, let's ban English because of promoting their food. let's ban..., let's ban...
I guess you understood my point, you can't ban people because you disagree and even if what they are saying is bullshit/stupid/dangerous...You can only ban them if they don't respect rules.
(To Americans and English people, I used stereotypes so I hope you don't take it personally. It is just for the exemple, love you guys)