Hours before the funeral of 13-year-old Andy Lopez, hundreds of students and other protesters marched through Santa Rosa, Calif., on Tuesday, a week after a sheriff‘s deputy killed the eighth-grader as he carried a pellet gun that resembled an assault rifle.

Sonoma County offices and some city businesses closed early in anticipation of the rally and march, which was expected to draw up to 1,500 people, some from the San Francisco area and Los Angeles, authorities and organizers said.