We Are Change L.A.
"Up until last year, I was very dubious," said Sheen, "I did not want to believe that my government could possibly be involved in such a thing, I could not live in a country that I thought could do that - that would be the ultimate betrayal," he added.
"However, there have been so many revelations that now I have my doubts, and chief among them is Building 7 - how did they rig that building so that it came down on the evening of the day?" said Sheen.
Here's the WTC 7 Collapse: