The Black teenager who recorded the now-infamous video of Derek Chauvin pressing his knee on George Floyd's neck for nearly 10 minutes last May is being hailed as a hero following the former Minneapolis police officer's conviction on murder and manslaughter charges.

President Biden said the guilty verdict against former Minneapolis police officer Derek Chauvin "can be a moment of significant change" for the United States as it grapples with systemic racism.

Biden and Vice President Harris addressed the nation on Tuesday, after Chauvin was found guilty of murder for the death of George Floyd during an arrest last year.

A 16-year-old Black girl was fatally shot by an officer outside her home after she called the police for help on Tuesday afternoon, according to her family.

The girl has been identified as Ma'Khia Bryant by her aunt, Hazel Bryant.

Bryant allegedly called officers at about 4:30 p.m. local time when a group of "older kids" threatened her with assault, her aunt told Ohio Statehouse News Bureau reporter Andy Chow. She did not elaborate on the nature of the threat.

The jury has found former Minneapolis police officer Derek Chauvin guilty on all the counts he faced over the death of George Floyd. The trial has been one of the most closely watched cases in recent memory, setting off a national reckoning on police violence and systemic racism even before the trial commenced.

Chauvin, 45, has been found guilty of unintentional second-degree murder, third-degree murder and second-degree manslaughter.