Openly opposing the rule of the NAZI party in Germany during the war was an excellent way to die for a cause, but one could not expect any more than that. There was no avenue for open discussion or debate. You were with the leadership or you were not, and those who were not were sought out, tried, and imprisoned or shot.
While one might die with a clean conscience, self preservation is a powerful motivator. Not everyone is willing to give up everything, including the lives of their family members, to stand up to oppression. if we here were being truthful, I imagine most of us, if not 99+%, would put on a uniform when told and turn a blind eye to all sorts of government horrors if it meant saving the lives of our spouses, children, or parents.
My wife's uncle was drafted into the Volkssturm in the spring of '45, given a rifle, and driven to western Germany to fight the Americans. At the time he signed up, he made the case for being excluded - he was old, very out of shape, not at all well, wife, kids... he was told he'd sign up or they'd lynch him from a lightpost. They meant it. They'd lynched his neighbour. So he signed up. Once left alone, he "lost" his rifle at the earliest moment he could and walked several hundred miles home. Caught pneumonia en route and died a week after getting back.
Did he deserve that? Was he implicated in the brutalities committed by his government? I don't believe he was. How about his wife, one of the sweetest old women I've ever known, who died a widow 60 years on? Don't think she would have had it coming had someone dropped a great nasty bomb on her house.
I think it's important to separate "government" from "people". We've always been taught that a democracy is "of the people", and of all the systems available to us, I guess it's the closest there is. But there are a lot of options out there - fascism, communism, various flavours of totalitarianism - that actively separate the will of the people from the actions of the government. Nazism did, as did Stalinism. The people on the street had very little input in how things got done, or to whom they were done. The government was like a mean dog off a leash. No one's tending the monster, and so bad things happen.
The great sin of the German people was allowing the dog to get big enough to be a threat to the neighbourhood. Should have drowned it as a puppy. But once it grew up and snapped the chain, they couldn't control it or affect it any more than anyone else. I think it's unfair to expect that they could have any sort of effective role to play in bringing it down.