Early this morning a teenage boy was stabbed to death in San Francisco's Excelsior district. The murder victim was strolling with a girl at around 1:30 a.m. "when they were confronted by four teenage boys at Lisbon Street and Persia Avenue," according to the Gate. The assailants demanded money from the girl, pushed her away, and stabbed the unidentified male. He later died at San Francisco General Hospital. No descriptions of the hooligans are available. And, of course, no arrests have been made.