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    Man kicked off California school campus strikes children with car

    01:31
  • Heard’s defense team rests, Depp’s attorneys calling rebuttal witnesses

    03:02
  • Jealousy may have been motive in alleged love triangle murder, police say

    02:08
  • Will Amber Head's team call Johnny Depp to testify?

    03:18
  • Johnny Depp-Amber Heard defamation trial enters final week

    03:37
  • Lawsuit accusing Bill Cosby of sexual assault heads to trial

    03:00
  • Watch: Employees fight back in California jewelry store robbery

    01:47
  • Grant Williams' 1996 murder conviction overturned

    02:07
  • Shootings leave four teens dead in small South Carolina town

    01:40
  • Minnesota mother arrested after 6-year-old's body found in car trunk

    01:20
  • Two suspected California car burglars outfitted car with license plate flipper

    01:57
  • Toddler dies after being left in hot car at Tennessee day care

    01:00
  • Sheriff: Florida deputy should be charged after man 'cooked alive' in stun gun arrest

    02:34
  • Buffalo shooting suspect pleads not guilty at arraignment

    02:12
  • Florida police announce charges for biker and deputy after taser likely set man on fire 

    02:54
  • Johnny Depp's past in question on day 19 of $50 million defamation trial

    03:33
  • Amber Heard defense team questions witnesses on Johnny Depp's character

    02:00
  • Wisconsin man sentenced to 10 years for racist acid attack

    01:38
  • Illinois bans 'ghost guns'

    01:45
  • Buffalo supermarket shooting suspect to appear in court as social media posts are investigated

    02:29

U.S. cities face challenges when using violence interrupters to fight crime

03:35

Some U.S. cities are using so-called “violence interrupters” that employ community-based mediation to help prevent crime. NBC News’ Safia Samee Ali reports on how few understand the challenges, with at least one expert claiming these programs need just as much as a police department.