4 NYPD officers killed in the line of duty since December 2014

It’s been one year since two NYPD officers were gunned down execution-style in Bed-Stuy.

Wenjian Liu and Rafael Ramos were killed on Dec. 20, 2014 by Ismaaiyl Brinsley, who then shot himself in a nearby subway station.

The NYPD has lost four of New York’s Finest since December 2014: Liu, Ramos, Brian Moore and Randolph Holder.

Scroll down to learn more about these four fallen officers.