More schools step up vigilance against hate crimes.

Focuses on hate crimes and school safety in the wake of the shootings in Colorado and Georgia schools. How many school districts in the United States are beginning programs to deter students from targeting people because of their race, gender, or sexual orientation; Comment of Alfred Blumstein, director of the National Consortium of Violence Research at Carnegie Mellon University, on distinguishing between a crime of prejudice and teenage bullying; Conflict resolution programs in areas such as Los Angeles, California.