On Thursday, a sniper opened fire at police officers during a peaceful rally against recent police violence. Five police officers were killed, making this attack the deadliest for law enforcement since Sept. 11, 2001. Here are their stories.

Officer Patrick Zamarripa 32 years old

Officer Lorne Ahrens 48 years old

Officer Michael Krol 40 years old

Officer Michael J. Smith 55 years old

Office Brent Thompson 43 years old

https://www.washingtonpost.com/graphics/national/dallas-protest-shooting/victims/?hpid=hp_hp-top-table-main_dallas-victims-1030pm%3Ahomepage%2Fstory