Armored vehicles lined this battered city’s main thoroughfares and thousands of law enforcement officers and National Guard troops worked to maintain order and enforce a citywide curfew Tuesday night, amid scattered reports of unrest after a day of largely peaceful protests.

As the curfew went into effect at 10 p.m., hundreds of people remained in the streets near the intersection of Pennsylvania and West North Avenues in blighted West Baltimore, where a CVS drugstore had been looted and burned during Monday night’s riots. There were some reports of arrests, and police fired pepper-spray balls to disperse crowds, who had earlier stood their ground despite entreaties from religious leaders and community activists.

Shortly before midnight, Police Commissioner Anthony W. Batts declared the curfew a success.

Earlier Tuesday night, nearly 1,000 people gathered at the Empowerment Temple A.M.E. Church, where about 500 religious leaders of different faiths called for healing. Members of the audience spoke about a litany of problems plaguing the city and called for better policing, policies to create jobs, and better schools.
But out in the streets, there were intermittent clashes with police, as some threw bottles at a line of officers behind riot shields.

The tense mood Tuesday night was a stark contrast to the almost upbeat feeling earlier in the day, as hundreds of people of all ages and races — many of them toting brooms and trash bags — worked to clear the neighborhood of rocks and debris.

In the late afternoon, peaceful demonstrators marched through the streets, chanting, “All night, all day, we’re gonna fight for Freddie Gray!” — a reference to the 25-year-old black man whose death, from a spinal cord injury sustained in police custody, set off rioting on Monday night.

“It’s sad, this don’t make no sense,” said Clarence Cobb, 48, one of many neighborhood residents who, describing themselves as brokenhearted, came out to survey the wreckage and clean up. “It comes to a point where you just got to take pride in your own neighborhood. This makes us look real bad as a city.”