Anonymous

Anonymous is an infamous troll group originating from 4chan which does operations centered on Ddos attacks on certain websites. As the name says, all the members where Guy Fawkes Masks and keep there internet identidies hidden.

Attire
Anonymous members all socialize in the Darknet, the hidden part of the World Wide Web. During protests they wear Guy Fawkes Masks and keep their Online Information secret. So it makes it extremely difficult to find out the identity of an Anonymous member.