`` May God grant Officer Wenjian Liu and Officer Rafael Ramos rest . NEW : `` We 're just hopeful that this tragedy will not be in vain , '' says a NY representative . The New York City Police Department is investigating the death of an unarmed black man who was shot by police on Saturday night after he allegedly tried to grab his gun. 13-year-old son of officer posts on Facebook : ` ` This is the worst day of my life '' Two NYPD officers , Wenjian Liu and Rafael Ramos , were shot in Brooklyn on Saturday .
NEW : `` We 're just hopeful that this tragedy will not be in vain , '' says a NY representative . The New York City Police Department is investigating the death of an unarmed black man who was shot by police on Saturday night after he allegedly tried to grab his gun. 13-year-old son of officer posts on Facebook : ` ` This is the worst day of my life '' Two NYPD officers , Wenjian Liu and Rafael Ramos , were shot in Brooklyn on Saturday .