April 28, 2015 7:05 pm LAPD Remain on Alert During Baltimore Protests Police are getting ready to cite some of those protesters marching in downtown Los Angeles. John Cádiz Klemack reports for the NBC4 News at 6 p.m. on Tuesday, April 28, 2015. US & World Videos 3:03 USC security changes after encampment removal 3:14 USC prepares for graduation after encampment removal 1:57 Hazmat team responds after two people are found dead in Northridge 1:04 Homeboy Industries founder Father Gregory Boyle receives nation's highest honor 5:46 NewsConference: Why the political silence during the campus chaos?