What is a good way of getting revenge?

I need to know ideas of getting revenge anonymously, because this crazy society England has been brought to has allowed Hoodlum pr1cks to pelt eggs at people for no reason. e.g of these pr1cks is this http://upload.wikimedia.org/wikipedia/commons/9/90/Globe_Town_Mive.jpg, these degenerates need lesson, fck im talking like a 40year old man, but im that p1ssed