Not a fan of violent sports or unconstitutional military actions or forever wars, but I do support every persons right to protest the wrongs they perceive, in any non violent way they wish.
You are right about the differences, but blind patriotism is just as dangerous as nationalism, maybe even more so. The -isms will get you every time.
Patriots have been fighting and dying in unconstitutional wars for a very long time, Nationalists are the ones demanding the politicians to send them. The two go hand in hand.