PROSPECT-LEFFERTS GARDENS — A Brooklyn man was arrested after taking a Facebook Live video of himself kicking a homeless man down a flight of stairs, authorities said.

Daquan King, 23, kicked the 58-year-old victim in the back and sent him flying down a flight of 15 steps in a stairwell at 50 Lincoln Rd. near Flatbush Avenue on March 24, then posted the video on his Facebook page, according to the Brooklyn District Attorney.

The 58-year-old homeless man was taken to Kings County Hospital and treated for cuts, bleeding, swelling and bruising to his head, according to authorities.

King — who law enforcement sources said is a member of the Hood Stars gang — was arrested the next day at his home on Lefferts Avenue. He is facing multiple assault charges for the attack and is currently held on $500,000 bail, court records show.

King’s legal representative from Legal Aid could not be reached.

Prosecutors said he has no relation to the Daquan King, also 23 years old, accused in the January murder of a Manhattan club owner.