The same reason Michael Moore's Fahrenheit 9/11 did so well at the box office. There's a small, but very dedicated hate America crowd there willing to part with their money to promote their "cause."
That's a bunch of drivel. So you're saying that the $8.5 million came from those who hate America. Every single one of Dr. Paul's supporters are wingnut conspiracy kooks, right?
Here's a bunch of those loony, anti-war, 9/11 was an inside job nutcases cheering on Dr. Paul before the Ohio State and Michigan college football game today. Just ordinary college students cheering on Dr. Paul in full view of the ESPN anchors. I know it pisses you off that they're not cheerleading for one of the MSM-approved assembly-line Republican candidates.