Lawrence O'Donnell explains why this shooting was different than most and dedicates the last word to the Capitol Police who saved lives at a congressional baseball practice.June 15, 2017
UP NEXT
Special Counsel Jack Smith among spate of officials targeted by holiday hoax 'swatting': NBC News
02:53
Why it's wrong to assume a single gunman is a 'lone wolf' shooter
04:56
Illinois fights gun lobby to ban marketing guns to little kids
08:28
Radical right wing mass violence sits dangerously close to Republican politics
10:57
84-year-old charged in shooting of Black teen who went to wrong house
06:52
GOP's legislative answer to gun violence: more guns, looser laws