Players and coaches around the NFL reacted with shock and sadness Tuesday after a gunman killed four people at the New York office building housing the league's headquarters.

Officer Didarul Islam “did believe in the American dream, not as something handed down but as something built with your own hands,” Police Commissioner Jessica Tisch told Islam’s family and friends.

NYPD Officer Didarul Islam, the police officer gunned down in a Midtown Manhattan mass shooting inside a Park Ave. office building, was posthumously promoted to detective first grade during his funeral Thursday as a sea of mourners,