Uvalde hallway video shows gunman entering classroom, police inaction - USA TODAY

A 77-minute video from a hallway camera in Robb Elementary is at the center of debate over what information to release after the Uvalde mass shooting.

A single Robb Elementary School security camera, mounted at the end of a hallway, captured the horror and devastating law enforcement mistakes that unfolded for more than an hour on May 24. A 77-min… [+7364 chars]

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