The widow and mother of Eric Garner, the unarmed black man who died after he was put in a chokehold by the NYPD, on Sunday denounced the ambush killing of two police officers in Brooklyn. "Anyone who's standing with us, we want you to not use Eric Garner's name for violence because we are not about that," Garner's mother, Gwen Carr, told reporters. "I'm standing here in sorrow about losing those two police officers." The officers, Wenjian Liu and Rafael Ramos, were gunned down while sitting in their squad car. Investigators are examining social media posts by the gunman, Ismaaiyl Brinsley, suggesting that the killings were retaliation for the deaths of Garner and of Michael Brown in Ferguson, Missouri.