The analogy to the Vietnamese is valid here, because we were told all of the same things about them that we are being told about the extremist Muslims. We were told that they were the frontier of the efforts of the communists to take over the world. We were told that if we didn't fight them, they would succeed in taking over the world and we would all become communists and speak Vietnamese or Chinese. It's the exact same thing as what we are being told about the extremist Muslims, just with a different boogey man this time, and the religion being Islam instead of communism.

We were told that if we weren't victorious in Vietnam, they would follow us here to the US and we would have to fight them here. When we left Vietnam in defeat, they didn't do that, did they? No they didn't.