You make a good point, but I also see High Plains Drifter's point of view. As I see it ... this character is dumping propaganda of a kind, a nature, that makes it enemy propaganda, which takes the issue beyond a simple 'do I agree or disagree' discussion (and you don't get discussion from him, anyway !). To what extent should such material be tolerated ?
There are certain forms of expression that no reputable forum would tolerate on grounds of decency. What makes propaganda designed to further the cause of enemies forces, any MORE decent than that ?