Replying to Kids who keep parking in front of my house. HELP!

so there is this company that has all there workers park on my street which is small enough to begin with. so these guys park like jerks in front of my house making it impossible to see out of my driveway so i stopped parking there. i've started to park guys in with my two vans to make them stop blocking my driveway. one day some guy came up, obviously high on pcp or something, screaming at me to move my cars or else he will murder me... he even called me some very vulgar words. tomorrow i'm going to take a huge dump on his car, thoughts?