Authorities says five or six young men jumped him while yelling anti-gay epithets.
Holiday does not remember the attack, but his injuries suggest he was hit with a blunt object.
He was hospitalized for several days at New York Presbyterian-Hospital Weill Cornell.
Holiday called state Sen. Tom Duane's office, who turned to the NYC Anti-Violence Project for assistance.
"Hate and prejudice of any kind are unacceptable in New York City or anywhere and there is a heightened injustice that this apparently anti-gay incident occurred during Pride Week," Duane said.
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