Sioux Falls, SD (KELO.com) — Sioux Falls police have arrested a motorcyclist, who pulled a handgun on another driver in traffic. Police Information Officer, Sergeant Aaron Bensen says the victim had just changed lanes on 41st Street, when a motorcyclist approached his vehicle, and pushed his car’s mirror forward, then pulled up in front of the car and drove slowly. Police say 19-year-old Kyan Thomas had a gun in his possession when he was arrested at his home a short time later. He’s charged with aggravated assault…