WASHINGTON: Joe Biden's emotional voice on the call to George Floyd's family told the story of his presidency: "I wish I were there just to put my arms around you."

The most powerful man in the world was calling Tuesday from the Oval Office to a cellphone in Minneapolis, just minutes after a jury convicted a white former policeman for Floyd's murder during a brutal 2020 arrest.

"We're all so relieved," Biden told the family and their lawyer Ben Crump, who tweeted a video of the more-than-three-minute exchange, played out on speaker phone.

"Nothing's going to make it all better," Biden said, "but at least now there's some justice."

A politician whose own seemingly charmed life was turned upside down by searing family tragedies, Biden has long been a master at showing compassion.

His willingness to mourn American Covid-19 deaths -- now numbering over 568,000 -- helped set him apart from Donald Trump during last year's election.

And the Democrat's well of emotional strength runs especially deep when it comes to the traumas -- historic and current -- facing Black Americans.

Biden may be white, but as former vice president to Barack Obama, the first African American president, he has unique credentials with the community.

When his campaign to become president hit an especially low ebb last year, it was a powerful Black politician, congressman Jim Clyburn, who pulled him up and set him on a remarkable path to victory.

Entering the White House, Biden brought Kamala Harris as his vice president -- the first person of mixed race and the first woman to hold the office.

African Americans tend to vote overwhelmingly for Democrats in nearly every US election.

Biden, though, has tried to convince the Black community that he doesn't just consider them political chess pieces -- that he actually cares about their unique plight.

The murder trial of former policeman Derek Chauvin gave him that chance.