What we know and don't know in the Texas massacre - CNN

We may never know why a shooter gunned down 21 people at Robb Elementary School. But as the nation mourns the 21 lives lost, more details are emerging about the investigation, the gunman and troubling clues leading up to the massacre in Uvalde, Texas.

We may never know why a shooter gunned down 19 children and two teachers in a massacre Tuesday at Robb Elementary School in Uvalde, Texas. But as the nation mourns 21 lives lost, more details are e… [+10913 chars]

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