Protestors gather outside Clarence M. Mitchell Jr. Courthouse, Monday, Nov. 30, 2015, in Baltimore, after the arrival of William Porter, one of six Baltimore city police officers charged in connection to the death of Freddie Gray. Porter, whose trial jury selection began Monday, faces charges of manslaughter, assault, reckless endangerment and misconduct in office. (AP Photo/Patrick Semansky)
Protestors gather outside Clarence M. Mitchell Jr. Courthouse, Monday, Nov. 30, 2015, in Baltimore, after the arrival of William Porter, one of six Baltimore city police officers charged in connection to the death of Freddie Gray. Porter, whose trial jury selection began Monday, faces charges of manslaughter, assault, reckless endangerment and misconduct in office. (AP Photo/Patrick Semansky)

BALTIMORE (AP) — Jury selection for the first police officer to go to trial in Freddie Gray’ s death began Monday with a judge questioning potential jurors about their knowledge of the explosive case, which led to widespread protests and rioting and added fuel to the Black Lives Matter movement.

Baltimore Circuit Court Judge Barry Williams conducted initial questioning in a courtroom but planned to interview at least 66 prospective jurors in a private conference room. The large pool of people suggested how difficult the selection process could be.

William Porter is one of six officers charged in the death of Gray, a 25-year-old black man who died April 19 of a severe spinal injury he suffered while in police custody.

Porter, who is also black, is accused of failing to get medical help for Gray during several stops made by the police van that carried Gray on a 45-minute trip. At the end, officers found Gray unresponsive. He was taken to a hospital and died a week later.

The officer is being tried first in part because prosecutors want to use him as a witness in the trials of several other officers. He is charged with manslaughter, assault, misconduct and reckless endangerment.

The judge asked 75 potential jurors whether anyone had not heard about the case, the citywide curfew imposed after Gray’s death or the settlement paid to his family. No one responded.

By standing in response to the judge’s questions, 12 jurors indicated they had family members in law enforcement. Thirty-eight indicated they had been a victim or a suspect in a crime, had been to jail or had charges pending against them.

Protestors gather outside Clarence M. Mitchell Jr. Courthouse, Monday, Nov. 30, 2015, in Baltimore, after the arrival of William Porter, one of six Baltimore city police officers charged in connection to the death of Freddie Gray. Porter, whose trial jury selection began Monday, faces charges of manslaughter, assault, reckless endangerment and misconduct in office. (AP Photo/Patrick Semansky)
Protestors gather outside Clarence M. Mitchell Jr. Courthouse, Monday, Nov. 30, 2015, in Baltimore, after the arrival of William Porter, one of six Baltimore city police officers charged in connection to the death of Freddie Gray. Porter, whose trial jury selection began Monday, faces charges of manslaughter, assault, reckless endangerment and misconduct in office. (AP Photo/Patrick Semansky)

Twenty-six people indicated they had strong feelings about the charges against Porter.

Williams read aloud more than 200 names of possible witnesses, a list that included more than 100 Baltimore police officers, lawyers and prosecutors.

A small group of protesters gathered outside the courthouse. Their chants of “All night, all day, we will fight for Freddie Gray,” could be heard throughout the morning proceedings.

One prospective juror was taken to a hospital after tripping on courthouse stairs. Court spokeswoman Terri Charles said the woman suffered a knee injury.

A verdict is likely to set the tone for the city. If Porter is acquitted, there could be protests and possibly more unrest. A conviction could send shock waves through the city’s troubled police department.

“Everything is at stake. The future of the city is at stake,” Police Commissioner Kevin Davis has said.

The first group of 75 possible jurors was sent home Monday night and court spokeswoman Terri Charles said that some would be notified before Wednesday that they had been dismissed. A new panel of about 75 potential jurors will be called into court Tuesday.

The judge said he expects the trial to wrap up by Dec. 17.

Two other officers are black and the three additional officers are white. They will be tried separately beginning in January. Their trials are expected to last until the spring.

Gray was initially handcuffed. Later during his van ride, his legs were shackled and he was not put in a seat belt, a violation of department policy, prosecutors have said.

Porter told police investigators that arresting Gray “was always a big scene,” according to a pretrial filing by defense attorneys. Porter indicated that he knew of a previous arrest in which Gray allegedly tried to kick out the windows of a police vehicle.

“You know, so he was always, always, like, banging around,” Porter said in the statement excerpted in the filing. “It was always a big scene whenever you attempted to arrest Freddie Gray.”

Defense attorneys say that helps explain Porter’s actions during Gray’s arrest.

The Rev. C.D. Witherspoon, president of the Baltimore chapter of the Southern Christian Leadership Conference, speaks during a protest on Thursday, Sept. 10, 2015, at the Baltimore courthouse. (AP Photo/Brian Witte)
The Rev. C.D. Witherspoon, president of the Baltimore chapter of the Southern Christian Leadership Conference, speaks during a protest on Thursday, Sept. 10, 2015, at the Baltimore courthouse. (AP Photo/Brian Witte)

For several days after Gray died, the demonstrations were mostly peaceful. But on the day he was buried, looting and rioting started, and businesses were burned down. The unrest resulted in millions of dollars in property damage.

The turmoil forced an incumbent mayor to drop out of a re-election campaign and toppled the career of a reform-minded police chief who was unceremoniously fired. The homicide rate soared, and the blood continues to spill on Baltimore’s streets at a pace unseen in decades.

Davis stepped in as police chief in July amid a crime spike that saw 45 homicides in a single month — a 43-year high.

An independent review of the police response to the rioting revealed “major shortcomings,” and painted a portrait of an overwhelmed and under-prepared department.

Hours before Police Commissioner Anthony Batts was fired in July, the police union issued its own scathing report. Its president called for Batts to “step up.”

The U.S. Justice Department is conducting a probe into the department stemming from allegations that officers hassled people and used excessive force.

Republican Gov. Larry Hogan said Monday that Maryland has been preparing for any disturbances related to the trials ever since he called in the National Guard to help restore order in April. He said his administration’s security team has been meeting on an almost weekly basis.