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    25 years later, a survivor reflects on Columbine school shooting

    02:21
  • 'We want to celebrate life': A Columbine survivor looks back on years of healing

    05:46
  • Florida investigators link fatal carjacking to second killing

    02:18
  • 'Rust' armorer sentenced to 18 months in prison after fatal shooting

    02:16
  • Video shows Ohio man confront Uber driver before fatal shooting

    02:22
  • Emotional impact statements offered ahead of 'Rust' armorer sentencing

    02:35
  • One killed and seven wounded in Chicago shooting

    01:55
  • Ralph Yarl, teen shot after ringing doorbell of wrong home, speaks out one year later

    02:18
  • At least three people shot outside Ramadan event in Philadelphia, police say

    01:15
  • After mass shooting, Lewiston bowling alley is set to reopen

    02:12
  • Grand jury indicts former school administrator in shooting of teacher by 6-year-old

    01:38
  • Parents of Michigan school mass shooter sentenced to 10-15 years in prison

    02:28
  • Gunman kills two people and himself in Nevada law office, police say

    01:14
  • Easter brunch shooting leaves Nashville community shaken

    01:26
  • At least 7 children injured in downtown Indianapolis shooting

    01:24
  • Arkansas airport executive wounded in shootout with ATF agents

    01:08
  • Spring break chaos and crackdowns in Florida

    01:52
  • At least one dead, two injured in Florida shooting

    00:57
  • Man won't be charged in NYC subway shooting

    01:29
  • James Crumbley found guilty on all counts in son’s school shooting rampage

    00:44

Other countries show how gun reform can drastically reduce mass shootings

01:57

Calls for changes in gun laws have heightened across the U.S. after the recent massacre in Uvalde, Texas. NBC News’ Hallie Jackson takes a look at how other countries like Australia and Canada have ushered in strong gun control laws following mass shootings.