From The Truth About Guns:

According to the San Antonio Police Department’s (SAPD) preliminary investigation, the so-called victim was reportedly causing a disturbance in the parking lot of an after-hours club, with witnesses saying he threatened to shoot others and attempted to run over people with his vehicle. In response, a man, described as being in his early 30s, pulled out a firearm and shot the man in the car in self-defense and defense of others—both legal defensive claims in the state of Texas.