Hiram Johnson High School resembled a compound under martial law Friday as police cars circled the campus and almost 20 security guards patrolled the grounds. If there was any doubt in students' minds that the school officials were taking an apparent resurgence of gang activity seriously, it was gone by the afternoon. "You couldn't even go to the bathroom without someone asking you a whole bunch of questions," said Ashley Hampel, 15. The campus was peaceful throughout the day, but that might have been because of a large number of absences as angry parents kept their children at home. Daily...