A birthday celebration at San Francisco's Ocean Beach on Saturday afternoon was interrupted by a man who at one point hurled a soda can, smashing a woman's face, one of the group members said. *** The San Francisco Police Department responded to the incident on the beach near Taraval Street at 3 p.m. and arrested a suspect. The three women and two teenage girls in the group noticed the man sitting about 30 feet away from them as they were having their picnic, Pillai said. "When we saw him approaching, we were uncertain what to do," she said. "He came...