Noam Chomsky is a widely known intellectual, political activist, and critic of the foreign policy of the United States and other governments. Noam Chomsky describes himself as a libertarian socialist, a sympathizer of anarcho-syndicalism and is considered to be a key intellectual figure within the left-wing of American politics. You can find his political views here.
Some of his books:
Hegemony or Survival: America’s Quest for Global Dominance
Failed States: The Abuse of Power and the Assault on Democracy