Florida man pulls gun, racial slurs on kids in street argument

The video begins in medias res during the annual 'Wheels Up, Guns Down' bicycle ride, with a group of teens and an older woman engaged in a heated dispute over the riders' blocking of traffic. As the woman and one boy face off, another teen rides up to them on his bicycle and she accuses him of running over her foot (apparently falsely, though perhaps it happened before the video begins). A man, who may well be the human incarnation of whatever ancient stupid god looks over Miami, barrels up waving a handgun and gets started with the racial slurs.
The woman complains about 'thugs' and begins filming, but this is not her video. One of the boys tells them they're going to be 'on the news'. A taut self-awareness flashes over the woman's face as she finally looks into the camera. 'That's fine,' she says. Then she and the man quickly depart.
And now they are on the news.
A man was arrested Monday after he was caught on camera threatening a group of black teenagers with a gun in Miami's Brickell neighborhood.
Police did not identify the man late Monday.... Keon Hardemon, a Miami commissioner, suggested the man should be charged with a hate crime.
'Assault with a deadly weapon and calling them n-----s sounds like a hate crime to me.... He is not a hero. He will kill someone next time if he isn’t arrested,' Hardemon said on Instagram.
UPDATE: Video shot by another driver shows the same pink-shirted man yelling racial slurs at the teenage bicycle protestors, apparently prior to the other confrontation. Note that the man in black in the thumbnail is just a bystander.