The Chicago police officer who shot a black teenager last year is expected to plead not guilty to murder charges on Tuesday, as Mayor Rahm Emanuel cut short a vacation after two more fatal police shootings over the weekend.
Meanwhile, Cleveland police and prosecutors faced continued criticism on Tuesday, a day after a grand jury decided not to charge two white police officers in the shooting death of Tamir Rice, a 12-year-old boy in 2014 who was playing with a toy gun in a park.
High-profile killings of black men by mainly white police officers since mid-2014 have triggered waves of protests across the country and fueled a civil rights movement under the name Black Lives Matter.
In Cleveland, some protesters took to social media on Tuesday to ask Cleveland Cavaliers basketball star LeBron James not to play to help pressure the U.S. Department of Justice to get involved in an investigation, using the hashtag #NoJusticeNoLebron.
