gabriel elizonda has more. >> reporter: police used pepper balls and smoke cannisters to break up a couple of hundred people who broke the curfew. despite brief scenes like this the majority heeded police warnings to stay home and rioting seen on monday was not repeated. the streets of baltimore are calm. earlier, the sound of gospel in the streets. in baltimore opportunity and hope don't often knock on the doors. jobs are scarce, black unemployment double that of whites. and the riots doing nothing to help the economic situation. this is a poor neighbourhood, one that needs economic development. businesses are closed and locked, and on the other side of the street, riot police are in force, and the national guard militarized the streets. residents say the police presence way keep the peace, it's not the help they need. they need jobs, opportunity and hope. it's a familiar call heard before after recent killings of black men by michael brown in ferguson, missouri to the shooting of 12-year-old tamir rice in gleeveland and other cases. americans have to pay attention. >> all that requiremen