国际英语新闻:Baltimore Mayor Lifts Overnight Curfew

Earlier Saturday, the mood was largely celebratory as protesters chanted "no justice, no peace" following Friday's announcement of charges against six police officers in the death of Gray.

By Saturday night, law enforcement officials once again called for calm, and said the curfew would stay in place. Several people were arrested after brief scuffles with police.

Saturday's rally was the largest organized gathering since State's Attonrey Marilyn Mosby filed the felony charges – ranging from assault to murder.

Mosby said Gray "suffered a severe and critical neck injury as a result of being handcuffed, shackled by his feet and unrestrained" by a seat belt in a police van used to transport him.

But many warned that the charges, including second-degree murder and manslaughter, were just a first step toward justice. The six police officers were arraigned and posted bail Friday.

Gray's stepfather, Richard Shipley, told reporters Friday that the family was "satisfied" with the indictment of the three black officers and three white officers and appealed to demonstrators for calm.

Protests nationwide

Protests also occurred in other U.S. cities on Saturday, some in conjunction with May Day-related demonstrations aimed at calling attention to workers' rights and immigration issues.

The Gray case drew more than 100 people to Los Angeles City Hall at midday to protest against police mistreatment of minorities.

In another development, the U.S. House Judiciary Committee is planning to hold a hearing on law enforcement accountability this month.

A statement from Committee Chairman Bob Goodlatte, a Virginia Republican, said recent "news reports of excessive force by law enforcement and attacks on police officers have raised our nation's conscience about how law enforcement interacts with our nation's citizens."

Maryland Governor Larry Hogan said in a statement Saturday  that  3,000 soldiers, 578 state police and 432 police officers from other states were used in response to the demonstrations.

Hogan has called for a statewide “Day of Prayer and Peace" for Sunday and another rally was planned for the day at Baltimore's City Hall.