San Francisco-- Americans were stunned by another act of senseless brutality this week when a San Francisco street performer went on a terrifying spree.Randy Heppelwhite, a San Francisco mime, was arrested by police yesterday after perpetrating what one onlooker called "one of the most hideously ambiguous performances I've ever seen." 
Union Square in the aftermath of the horror
"He jumped right out in front of a group of tourists, and without saying a word, he seemed to pull out a large caliber ...