Two Wayne Rooney goals at the start of the second half were enough to hand Sir Alex's men the points, even though Luis Suarez pegged back United's lead with 11 minutes to play.
But the Uruguayan had already ensured he'd be talked about at the final whistle when he'd earlier refused to shake Patrice Evra's hand. He also courted controversy when, seething with frustration, he lashed the ball into the stands as the half-time whistle blew.
We've compiled some of the best images taken on the day, many of which come from United's club photographers, John and Matt Peters.
Click the image above to browse our gallery.