Anyone know what’s up with this skateboarding unhinged guy that screams at people on 30th ave

Has anyone come across a very unhinged guy who skateboards (blue bandana and neck tats) around 30th ave yelling racial slurs and cursing at random people? Saw him skate by today around 845am at 37th St and 30th ave screaming at people and menacing this asian lady yelling, “Go back to your country!”

Is this guy dangerous or just totally unhinged?