Gunman kills 19 children and 2 teachers at Uvalde elementary school deadliest shooting

An 18-year-old gunman kills 19 children and 2 teachers at Robb Elementary School in Uvalde, Texas, in the deadliest school shooting since Sandy Hook in 2012. Law enforcement officials later face intense criticism for waiting more than 77 minutes before breaching the classroom while children called 911. President Biden delivers an emotional address to the nation that night from the White House, demanding gun control action. He and the First Lady travel to Uvalde to meet with grieving families. The massacre galvanizes bipartisan Senate negotiations that produce the Bipartisan Safer Communities Act signed weeks later.