Are they the Dutch guys who used that expanding foam stuff to kill the cameras? 
  
yep   
  
they are also the guys who shoot them, burn tyres on them, pull them out of the ground, and blow them up with explosives. 
  
it was one of their members who used to mark them for death in pink to taunt the police, and then at some point he'd blow it up and the police wouldn't know when  
  
We have similar folk round here - we call them Scallies!