How to take legal action for player to official violence<br>Call the police. Assault is a crime, and you should call the police as soon as possible. The police will need to investigate and will ask you questions.
You should call the police before it happens.
It makes sense to call the police after a crime is committed, not before.. 
( z1 call :ARG0 ( z2 you ) :ARG1 ( z3 police ) :time ( z4 before :op ( z5 event ) ) :ARG1-of ( z6 recommend ) )