SEATTLE — A 32-year-old Tacoma man was killed and six people were injured in a shooting that occurred during an argument around 1 a.m. Saturday at a large gathering in downtown Renton, according to police. No arrests have been made and police are investigating. The six injured people were taken to local hospitals with gunshot wounds, according to Renton police. One person taken to Valley Medical Center in Renton and another taken to Overlake Medical Center in Bellevue did not suffer life-threatening injuries, said Detective Robert Onishi. The conditions of four people taken to Harborview Medic…