i wouldn't mess with any of them...i'm way to nice,i always think of consequenses when i do something but these guys would stab you coldblooded...
funny story,i once tried to get in a club in düsseldorf(of course they did not let me in these nazis).so me and my friends stood outside while 2 bikers came...i was joking and i said to my friends hey i bet they belong to the hell's angels...as they passed us we could see they actually really belonged to them and walked into the club as if they owned it,didn't even say hello to the bouncers...