A salivating sicko was busted last week in a racially-motivated spitting spree that targeted four white women in Williamsburg, Brooklyn — but walked free a day later, The Post has learned.

Anthony Caines, who is black, was arrested Nov. 13 after his repulsive two-day spitfest, but was sprung on Nov. 14 after pleading not guilty on charges including aggravated harassment based on race or religion, according to court documents obtained by The Post.

Caines, 45, whose rap sheet include arrests for domestic violence and contempt of court, was granted supervised release, authorities said.

“I just felt so violated,” said one of Caines’ alleged victims, who asked not to be named. “In my face, of all places. It was crazy, honestly.”

The victim, a college student, was stunned when she was attack

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