Charlie Sheen defended his comments about 9/11 on the Jimmy Kimmel Show last week while promoting Scary Movie 4. The public attacked Sheen after asking questions about 9/11 on a national radio show. The general viewpoint being that he was just an actor, what right does he have to make such accusations.

"I felt the only real validation I needed was being a tax paying America who loves his country," Sheen shot back.

Sheen says he's done his research and challenges the public to ask its own questions.

"I've done a lot of research. It's not just me, its the people who have come before me. It's the experts, the engineers," Sheen said. "And I took a look at their research and I said, yeah, it doesn't add up."

"Don't listen to me, do your own research," warns Sheen. "What happened to a time in this country when we were entitled, that we had a constitutional and a God-given right to be curious about things that don't make sense."

You can check out the whole video here.