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Andrew Pollack, who became a prominent advocate for school safety after his daughter was a victim in the 2018 Parkland shooting, shared what could have been done to avoid the massacre at Robb Elementary School in Uvalde, Texas, Tuesday on "The Ingraham Angle."

ANDREW POLLACK: I'm so angry that I'm practically shaking right now at what happened — what these parents have to deal with. And just thinking that my daughter was murdered and we put a commission in Florida together to look into all the failures.

And this district in Texas didn't learn anything about what happened with my daughter. How hard could it be that a single point of entry and armed policemen or highly trained teachers at the school, even at a single point of entry, would prevent it. And it just angers me. This thing didn't have to happen today. 

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