I think it was "We meddle." Firefly verse is based around the Civil War era. Joss does a good job of staying away from his own political views. He said himself that he wouldn't get along with Malcom Reynolds.
I just went and saw the movie another time. Damn such a good movie. :)
Or he became a reaver because he was exposed to the chemicals that effected the reavers. The whole "watched" reason is what they assumed happened, it is not necessarily the truth. Also I do believe it was added to their...
All screens can be found here, mixed in with some of the older ones.
http://www.gamereactor.dk/texter/?id=60663&PHPSESSID=cbfeec388de6e3245592ec149918de09