He’s a menace to society.

Timothy Bohler has been in and out of jail since he was a teenager, with a lengthy rap sheet that includes the death of a cancer survivor in Queens while on release from state prison and a rape rap in the Bronx just six months after he got out, records reviewed by The Post show.

At 31, Bohler has 45 busts in all on his rap sheet — 20 of them now sealed — but somehow slipped through the fingers of the criminal justice system for most of his life.

His criminal record dates to when he was a troublesome 16-year-old from the Bronx, and most recently includes claims that he sliced off an MTA worker’s fingers with a machete over a dog dispute. 6

“There is no longer any mechanism in law to keep people like this in prison,” one law enforcement source said this w

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