MINNEAPOLIS — Supporters and critics of a white Minnesota state trooper who’s charged with murder for killing a Black motorist confronted each other at a courthouse Monday in an exchange that was heated but peaceful, reflecting the strong emotions that the politically charged case has generated.

More than 300 people, including law enforcement officers from several agencies, gathered in the Hennepin County Government Center in solidarity with Trooper Ryan Londregan ahead of a pretrial hearing in his case. He’s charged with second-degree murder, manslaughter and assault for fatally shooting Ricky Cobb II as Cobb tried to drive away from a traffic stop last summer. A similarly large crowd aligned with the Black Lives Matter movement shouted down an attempt by Londregan’s defense team to hold a news conference afterward.

“Trooper Londregan followed his training,” defense attorney Chris Madel was able to tell reporters. He noted that the defense team filed sworn declarations from four current and former troopers who say Londregan’s use of deadly force was justified. Madel also called for “a prosecutor who cares about the facts more than they do about yelling,” before the shouts of “Whose streets? Our streets” grew too loud.

“No good cops in a racist system,” the protesters also chanted. “No justice, no peace. Prosecute the police.”

Four former federal prosecutors from the Washington, D.C.-based law firm Steptoe LLC will be deputized to take over the case from the office of Hennepin County Attorney Mary Moriarty after the original leader of the prosecution team stepped away from the case, said Chris Freeman, managing attorney for the office’s adult prosecution division.

Freeman did not address news reports that Assistant County Attorney Joshua Larson had removed himself as lead prosecutor, but confirmed to Judge Tamara Garcia that Larson is no longer on the case.

Moriarty later said in a statement that she would retain full authority over the case and pay the attorneys out of her existing budget. She named Karima Maloney, Michael Bromwich, Ryan Poscablo and Steven Levin as the new team.