Daisies for Dallas
A memorial to Twelve Dallas law enforcement officers who were shot, five fatally, on July 7, 2016, by a sniper who opened fire on a police brutality protest.
Dallas Shooter Was Army Veteran and ‘Loner’
https://www.nbcnews.com/storyline/dallas-police-ambush
Trick or Treat: A memorial to the victims of a driver who plowed a pickup truck down a crowded bike path along the Hudson River in Manhattan on Tuesday, killing eight people and injuring 11 before being shot by a police officer in what officials are calling the deadliest terrorist attack on New York City since Sept. 11, 2001.
“We thought it was a Halloween prank.”
https://www.nytimes.com/2017/10/31/nyregion/police-shooting-lower-manhattan.html