To watch. I wish I had gotten to it sooner, so I could have made this post sooner.
Some people don't like Glenn Beck. Some do, and some are pretty much neutral on him. No matter what you think about the guy, I suggest you watch this 40 minutes of video. Take the information and do your own research. I don't have to--I've been at this for a long while. But what it took me years to research and learn about, you'll get (admittedly in a Cliff Notes version) in 3 parts over 40 minutes.
Like I said, do your own homework. But prepared to be frightened.