Once the campus realized what was happening, armed citizens retrieved firearms and kept the shooter pinned down until law enforcement arrived. There were zero innocent victims shot by a relatively unorganized group of citizens. There were a number who received superficial injuries from flying glass and debris when the perp was no longer able to put his head above the parapet to shoot anyone on campus and had to content himself with shooting victims already in the tower.
Yeah, it would have been nice if the armed Texas citizens would have been better shots. But a superficial injury by flying glass is still far preferable to a fatal injury by gunfire.
***The first big mass shooting in America which took place at the UT tower in Austin, Texas in the mid 1960s.***
Hollywood made a TV movie about this. It had the usual anti-gun statement in it, and at the end there came a voiceover telling how the shooter had a brain tumor, but there also came a louder voiceover covering the movie voiceover advertizing another entertainment show on the network. It almost covered the movie voiceover about the brain tumor.
It is as if the network (I think it was NBC) did not want the audience to know about the tumor.