Suspect Accused Of Ambushing NYPD Officers Charged With Murder

Robert Williams faces charges of attempted murder, criminal weapon possession, and resisting arrest after allegedly ambushing police officers. He has a history of violent crimes, including carjacking and shooting at NYPD officers. Mayor Bill De Blasio described the incident as a premeditated assassination attempt on police officers. Both injured officers have been released from the hospital and were welcomed by their colleagues and local officials.

How does the text describe the suspect's criminal history?

What was the reaction of the officers when they were released from the hospital?