I second this, especially the third programme about the 'war on terror' etc.
Good documentary site is documentaryheaven (dunno if its .com or whatever; google it).
Also maybe watch some of the Oliver Stone documentary films he made, like Comandante where he interviews Castro.
“People think they have taken quite an extraordinarily bold step forward when they have rid themselves of belief in hereditary monarchy and swear by the democratic republic. In reality, however, the state is nothing but a machine for the oppression of one class by another, and indeed in the democratic republic no less than in the monarchy.”
- Friedrich Engels