Quoted By:
It's a Guy Fawkes mask. Google it if you don't know, it's a Britfag thing. We blow shit up in two days to "celebrate the failure of his plans" or something, it's still bullshit. We just like to blow shit up.
That particular type was popularised by Alan Moore's graphic novel then subsequent film, V For Vendetta. It was then used by /b/'s EFG.
Answered?