Fear of what, though? We're certainly not going to be executed, or shipped off to some concentration camp. We're probably just going to suffer some obloquy. At the worst, we will lose our jobs. Given the example of the courage with which some heroes resisted the real threat of totalitarian regimes, how can we allow such flimsy threats to intimidate us?
However, none of the foregoing detracts from your point. Americans these days are not the heroic nation they once were. Consider how much of war planning involves avoiding situations in which American boys might end up in body bags.