The ex-con who allegedly attacked a 20-year-old worker with autism in a Queens Stop & Shop parking lot was cut loose without bail Saturday — enraging the victim’s family.

Alvin Martinez, 62, was granted non-monetary release despite the Queens District Attorney’s pleas to set bail against the alleged attacker.

“Another example of our revolving door justice system working on behalf of the violent offenders while innocent people suffer,” a family member of the victim, who has not been publicly identified, told The Post.

Martinez allegedly targeted the disabled worker outside the Rockaway Park store Thursday — marking the second time in just six months the employee was roughed up by a violent stranger.

Martinez has a rap sheet dating back to 1982, including priors for criminal possession of stolen property, criminal possession of controlled substance, petit larceny and grand larceny.