One year ago today, our @NYPD47Pct brother, P.O. Didarul Islam, made the ultimate sacrifice after he was shot and killed while protecting New Yorkers during a mass shooting at a Manhattan office building. A loving father and hardworking cop, Officer Islam dedicated his life to serving others. His heroism is always remembered, and may he and all the victims killed that day continue to rest in peace. #FidelisAdMortem