Three chilling crimes on city streets this week represented every New Yorker’s nightmare and symbolized two major criticisms of the criminal justice system — revolving-door justice and a

Despite multiple arrests and a history of mental health problems, Ramon Rivera, accused of killing three strangers in a wild Manhattan stabbing spree, was never sentenced to more than a year in jail.

Ramon Rivera was carrying two knives when he was arrested by Robert Garvey, an NYPD officer from LI, officials said.