The anti-ICE mob violently protesting outside a Brooklyn hospital Saturday was rallying in defense of an illegal migrant previously arrested for assault and drug possession, officials told The Post on Sunday. Okeke, who was arrested at some point for assault and criminal drug possession, landed on the radar of Immigration and Customs Enforcement officers, who tracked him down Saturday.“ During his arrest, Okeke refused to comply with officers’ lawful commands to exit the vehicle and weaponized his vehicle to attempt to hit ICE officers,” the DHS representative said. “Okeke became physically combative, attempting to punch and elbow ICE officers.