Any stranger following me home at night like that would require serious medical attention. Once the cops showed up I'd claim self-defence and have them charge the thug with criminal harassment.
I can't help but think of that passage in The Gulag Archipalago where the protagonist and his friends wonder how different their lives would be if the government agents were afraid to go to work in the morning.
Isn't it wild, they have pulled that stunt on more than one occation, thing got so nasty, the enforcers were afraid to go into an establishment without police escort.
Have a friend who told me he gets warned before a raid.... the warning comes from the cops. :-}