Okay, let's start at the very beginning. He starts off by saying that these shootings occur in gun-free school zones. The obvious hack-political point being made there is that more guns would make them more safe.
That's untrue, many schools have SROs on campus with guns. The SRO in the most recent situation stayed outside while the shooting occurred.
He then says gun-control doesn't work because Chicago and Baltimore have high murder rates. He fails to mention that 60% of the guns used in Chicago crimes come from outside of the state. Meaning, people buy guns where there is no gun control, and use them in cities with gun control.
He says the shooters come from broken homes, which are encouraged in some way by Democrats. That is just a ridiculous statement, the shooters come from a massively diverse background. Some rich, some poor, some white, some black, some Hispanic, etc. It is just a dumb point.
He somehow ties abortion to mass shootings, without really specifying how that makes any sense.
He literally begins by running through talking points, that have obvious counter points, and completely ignores the fact that these debates have already occurred. That is called grandstanding. Saying things people have already said, that have already been countered, without offering a single new response.