The Bush story is also true. The BS the DNC tried handing the people about Kerry being a hero, being tough on defense, etc was a lie. People can tell the difference. The fact that they went to see MM's crappy movie doesn't mean they liked it. People don't "like" a wreck on the highway but the still slow down to take a look.
My liberal relatives who saw the movie said it was pretty hard to swallow if you have a functioning brain. They said that Bush was portrayed as both an evil super genius and a moron.