21 Dead at Elementary School W of San Antonio, TX {May 24, 2022}

[RitterSport]

This post in another thread backs that claim up a bit:

Controversial encounters between law-enforcement and civilians - the omnibus thread #2

When the active shooter incident at Robb Elementary began yesterday, the police let the shooter barricade himself in a classroom with children and adults inside, then started evacuating their own children and left him in there for an hour, without making any attempt to break down the door, until they found a teacher with a key, during which time they threatened to Tase parents who wanted to rush the school themselves. ALL of the dead were in that classroom. Perhaps someone should have re…