*AUDIO* Shooting at Madden Tournament which was Live on Twitch on 8/26/18
If you watch closely when the cameras are on the two players, a red dot from the shooter's handgun is visible quickly landing onto the black man's chest. You can see it rest there for just a split second before the feed is cut and a shot is fired.
It is said, at this time, that there are up to 4 dead, and some injured. Witnesses say a professional madden player committed the shooting, but a motive is so far unannounced.
Personal Thoughts: The shooter probably was after the black guy, or one of the other professional players. The fact he went in first on that guy makes me believe he's 1. the target, and 2. the shooter tried to get it to show on stream.