In what's expected to be a dramatic moment in the crisis over race and policing, George Floyd's brother, Philonise Floyd, is testifying Wednesday before the House Judiciary Committee on reform proposals, following his death in the custody of Minneapolis officers that triggered national outrage.

Asked what he plans to tell the committee as he arrived on Capitol Hill, Floyd said, “Justice for George."

Also testifying are the Floyd family's lawyer, Benjamin Crump, a former Secret Service agent and the sister of a federal law enforcement officer killed in the line of duty.

The hearing will "examine the crisis of racial profiling, police brutality and lost trust between police departments and the communities they serve," the panel said in announcing the hearing.

Here is how the hearing is unfolding. Please refresh for updates:

10:18 a.m. Nadler gives opening statement

In his opening statement, Nadler outlined what he said is the reality for many black men in America and acknowledged protesters currently demanding change.

"We are all familiar with the terrifying words, 'I can't breathe.' They were uttered in Minneapolis by George Floyd, while a police officer pinned a knee to his neck. For a chilling eight minutes and 46 seconds, taking from him the final breath of life.

"Six years ago, Eric Garner uttered those exact same fateful words while locked in a chokehold in New York City. He, too, died at the hands of law enforcement.

"Millions of Americans now call out I can't breathe as a rallying cry in the streets, all across our country, demanding a fundamental change in the culture of law enforcement and meaningful accountability for officers who commit misconduct," Nadler said. "Today, we answer their call.

"African Americans are more than twice as likely to be shot and killed by police. Each year, and black men between the ages of 15 and 34 are approximately, 10, times more likely to be killed by police than other Americans. This outrage is a reality," Nadler said.

"I want to make clear at the outset that the bill is not an indictment of all police officers," Nadler emphasized. "But there are many too many officers who abuse their authority. And we cannot be blind to the racism and injustice that pervades far too many of our law enforcement agencies and injustice that the nation is demanding that we enact meaningful change. This is a systemic problem that requires a comprehensive solution."

Before concluding, Nadler directly addressed Floyd's brother, Philonise.

"We must remember that he is not just a cause a name to be chanted in the streets. He was a man. He had a family. He was known as a gentle giant. He had a rich life that was taken away from him far too early. And we mourn his loss," Nadler added.

"We have lost George Floyd, Breonna Taylor, and the many, many other victims of excessive force by law enforcement. We must act today to honor their memory," he said.

10:08 a.m. Nadler says everyone must keep masks on as he gavels in hearing

Philonise Floyd is wearing a mask as he sits at the witness table.

Though the hearing is taking place in the larger auditorium of the Capitol Visitors Center instead of the usual House Judiciary Committee room, there was little social distancing before the hearing started, with many participants visiting on the floor, including House Speaker Nancy Pelosi.

Chairman Nadler has asked that everyone present keep their masks on at all times, unless speaking, citing public health reasons.

10 a.m. Emotional, political hearing on policing reform about to get underway

A few moments before the hearing got underway, House Judiciary Chair Jerry Nadler, D-N.Y., signaled to reporters its high stakes, noting public pressure and partisan politics.

"There's going to be very heavy pressure from the American people. I hope the Republicans will be responsive to that pressure, but we must have real reform, real change and frankly, anybody who stands in the way is going to get bulled over."

Though the hearing is taking place in the larger auditorium of the Capitol Visitors Center instead of the usual House Judiciary Committee room, there was little social distancing before the hearing started, with many participants visiting on the floor, including House Speaker Nancy Pelosi. Nadler asked that everyone present keep their masks on at all times, unless speaking, citing public health reasons.

Earlier this week, Democratic leaders introduced a sweeping police reform package on Monday aimed at improving accountability and police training. It would ban police chokeholds, and also require states to gather data on police misconduct, among other provisions.

Republicans have invited three witnesses to Wednesday's hearing, including Dan Bongino, a former Secret Service agent and conservative pundit frequently quoted by President Donald Trump, Darrell Scott, a pastor who served an adviser to Trump's 2016 campaign and several White House advisory councils. Angela Underwood Jacobs, a former congressional candidate and a city council member in Lancaster City, California, and the sister of a Federal Protective Services officer who was killed during protests in Oakland, California, is also expected to testify.

Trump, who has called for justice for Floyd since his death, has also criticized protesters and pledged to support "law and order."

He floated a baseless conspiracy theory on Twitter Tuesday, suggesting that one protestor in Buffalo, New York, hospitalized after being pushed to the ground by police officers, was an "ANTIFA provocateur," a comment widely condemned by Democrats and many Republicans.

Trump and Republicans have also used some activists' calls to "defund the police" -- a push generally calling for the reallocation of some police funds to other social services -- to criticize Democrats, though party leaders have made clear that they oppose the idea.

Congressional Republicans are also working with the White House on their own policing reform measures that could improve training and data collection on misconduct, though the details of the proposals have not been finalized.

Senate Judiciary Chairman Lindsey Graham, R-S.C., has scheduled a hearing next week on policing reform, telling reporters that he has told his members to "think big" in terms of witnesses.