A white Florida man was caught on video yelling racial slurs and waving a loaded gun at black teenagers marching at a “Bikes Up, Guns Down” event on Martin Luther King, Jr. Day in Miami. Mark Bartlett, 51, was arrested for carrying a concealed weapon after police used video footage to identify him. He may also be charged with hate crimes under Florida’s laws regarding racially motivated incidents. “I am outraged at the reported acts depicted in the videos taken during this incident,” Miami-Dade State Attorney Katherine Fernandez Rundle told reporters Tuesday, the Miami Herald reports. “I have assigned my chief of our Hate Crimes Unit to immediately investigate and handle this case.” Video of the incident published on the Dream Defenders Twitter feed shows Bartlett yelling, “Get out of here you piece of shit,” to black teenagers on bicycles. Bartlett, who is free after posting bail, asked his arresting officer, “Why am I being arrested when those kids are free to ride around? I did pull out my gun. But I never pointed it at them.” Warning: Racial slurs are in the YouTube video.