This Mother story sounds fishy to me, could this have been a law suite set up.
If I threaten to shoot someone and my parents though I have a BB gun, my father would have taken away from me then beat me with it.
The mother then goes on to tell the police her son is trigger by Police. Leading the police believe her son could be armed and would shoot on site of a uniform.
Who taught her son to be scared of the police?
Going forward, it would be the police.