The arrests were mostly for misdemeanors, like blocking traffic
Maryland police arrested dozens of demonstrators, 65 according to NBC, on Saturday who were protesting over the most recent fatal shootings of two black American men by police. The arrests were mostly for misdemeanors for blocking traffic.
Authorities grappled with a wave of demonstrations against police use of force that has swept the country in the past weeks after the killing of Philando Castile, 32, in a St Paul, Minnesota, suburb, and Alton Sterling, 37, in Baton Rouge.
The protest took place as Baltimore awaits a decision in the trial of a police officer charged in the 2015 death of black detainee Freddie Gray, which then triggered protests and rioting.
At a spontaneous march in Dallas on July 7, a US military veteran shot and killed five police officers, sending a chill through law enforcement as well as those involved in the mostly peaceful demonstrations.
Baltimore police received a warning from the Federal Bureau of Investigation on Thursday that local gangs were targetting police, Police Chief Kevin Davis said.
With protests hitting many US cities, the deadly ambush of Dallas police, and the ever-present threat of gun violence, four countries have urged citizens to be on alert if visiting the United States. The Bahamas, Bahrain, New Zealand and the United Arab Emirates have warned citizens to be on guard if visiting US cities rocked by sometimes violent protests.