Usher -- Attacked by Screaming Woman For Parking in Handicap Spot

Usher was bull-rushed in the middle of a crowded parking lot in ATL last weekend -- by an angry woman looking to fight the singer for parking in a handicap spot ... and TMZ has the footage.

Eyewitnesses tell us ... Usher had just arrived to a shopping center near the Little 5 Points Halloween Parade (hence the guy in the Elvis costume) when the woman saw U's SUV parked in a handicap spot.

We're told the woman demanded the singer move his car -- but Usher refused and she went ballistic ... screaming, flailing her arms, and grabbing Usher's hoodie.

At one point, she screams, "You don't belong here!"

Sources say the woman's husband eventually dragged her away from the scene -- and Usher drove away not long after.

Attempts to reach Usher's people were not successful.

7:38 AM: A witness who was at the scene tells us ... when the woman first approached Usher's car, the singer was still in the driver's seat with his window down ... so she shook up a beer and sprayed it at him.