The YouTube sensation known as Psy is best known for his silly horse moves in "Gangnam Syle." But, recently we have found out about his anti-American past. 

During a 2004 performance that was part of a pretest against the 37,000 U.S. troops stationed in South Korea, the singer smashed a camouflaged American tank on stage, Mediate reports.

This isn't the first time Psy expressed anti-American sentiments either. In a song tittled, "Dear American," he rapped the lines, "Kill those (bleeping) Yankees who have been torturing Iraqi captives," during a 2002 concert in South Korea

Psy will be singing for the President tomorrow as well for the "Christmas in Washington." President Obama stated that he doesn't pick the performers either. But, he's the President....couldn't he still stop it? OR get someone else?

I think that is kind of ridiculous....It makes me sick to my stomach when people dis our troops when they are fighting for OUR country and are risking their lives!

Psy came out with an apology and you can read it here.

The Hollywood Reporter reveals the lyrics:                                                              

"Kill those bleeping Yankees who have been torturing Iraqi captives/Kill those bleeping Yankees who ordered them to torture/Kill their daughters, mothers, daughters-in-law and fathers/Kill them all slowly and painfully."