Some drunk guy in the middle of a soccer riot in England on Sunday PUNCHED a police horse.  And he claims it was in SELF-DEFENSE.. because police were trying to break up the crowd and the horse charged at him.  There's video of it that shows him standing his ground when the horse charges.. throwing the punch.. then appearing to get ready to throw MORE punches, until a cop runs in and tackles him.  The man admits he'd had about five beers, and says he panicked.  He's out on bail until his hearing next month: