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I'm sure we stayed in VN despite all the rancor at home and despite what they told the populace. I'm sure that Korea was far less popular than the government hoped it would be. Heck - even WW2 had a strong and persistent strain of un-popularism at home throughout. And if you go all the way back to 1776 only 1 out of 3 colonialists sided with the Revolution. You simply need to understand that wars are fairly unpopular when they are going on. It's only later that they become heroic. If we could, we should go back to 1776 and just stay a colony. At least it would all be someone else's fault.