@mdma yer spot on.
A smack head on three occasions came up to my place of work and threatend to snap my legs, each time i reported it to the police and nothing happend. He even turned up at my girlfrinds house(now ex girlfriend)in a stolen car full of drugs and alcohol causing trouble. Again the police didn't do FA.
The last time he came to the market stall where I work and threatend to snap my legs and he through a fag butt at my face.
This time I said, "come on then try it." He ran off straight to the police station and claimed that I had threatend to kill him. It was me that got arrested. Fortunatly the CPS NFA'ed it.
But the policeman that came to arrest me (hands on very red face) had the gall to say, "Er we er like er know what he is like er so we will er not arrest you now but if you can come down the police station tomorrow we will arrest you then."