There have been several of this type on SF's fishermans wharf. I was up there about ten years ago when the rage was to have these "performers" jump out from behind the bushes at the tourists.
One day the nut job picked the wrong tourist, an 80 year old Japanese lady, and an instructor of Budo. She had an umbrella with her and knocked him out cold. Me and the group I was with saw the whole thing. One shot to the leg as soon as he jumed out, when he reached down in pain the next blow right to the noggin, out go the lights. Then she circled him for about 30 sec to see if he got bck up. I have never seen anything like it in my ife and she got applause from about 100 people that were watching this guy.
It made the papers for a day or two. I thnk this was Sept or Oct of 96.
Too funny,
Les