President Trump honors wife of fallen NYPD Officer who was killed by a felon with 21 prior arrests

Watch: President Donald J. Trump honors Stephanie Diller, the wife of fallen NYPD Officer Jonathan Diller, who was killed by a felon with 21 prior arrests.

"We are going to make sure that Ryan knows his Dad was a true hero, New York's finest, and we are going to get these cold-blooded killers and repeat offenders off the street."