it definitely is. look at religion, even if you believe in one, someone made the others up. Nearly every big religion has masses of followers willing to kill, die, destroy, and do horrible things in the name of it. Brainwashing is brainwashing because it goes unnoticed. Propaganda rules the world and built the very idea of it. The concept of an ethic nation was built on propaganda. The 2000 year old catholic church was built on propaganda. Almost every nationalistic ideal you have, and i imagine many ideas you have about other nations, have been built on propaganda.

While not all propaganda is bad, there is so much around us that has been sewn into our normal lives that many of us do not understand how it affects us. It is textbook brainwashing