Unless, of course, you're one of the people being spied upon.
If some guy comes up to you and says "would you like to bomb the empire state building" you say no. It might be abhorrent to do domestic surveillance without legal oversight. However, doing something like infiltrating the american Nazi party, potentially dangerous militia groups, or heaven forbid a terrorist cell in something-stan is how you get the best intelligence with the minimum of civil and human rights violations. The same technique is used in civilian law enforcement against everything from cocaine distributors, to the mob, to busting corrupt officials.
I notice you dont even bother to address the practical utility of such methods, how they are performed, and what value they are.
If we're doing body counts, over 60,000,000 people perished in WW2. Are you so sure the other evil is greater?
The subjugation of all of Europe, the enslavement of every non-germanic living east of the Elbe, the complete destruction of the jewish and romani peoples? Yeah. Yeah I am. A quarter of those sixty million were killed in death camps. The majority of the rest were suffered by russians defending their existence as an ethnic group from Nazis bent on enslaving them to death in a quest for agricultural ethnic Lebensraum.
To say nothing of the Japanese. Does the Rape of Nanking ring a bell?
And, as I've said before, if I had my way, WW2 would never have happened. Proactive peace, we might, just might be able to do the right thing today to prevent the wrong thing tomorrow.
And what would that right thing have been with Hitler?
But, here's an interesting question though, let's say we're at 1939 in our own timeline. I've read some historians say that the average German citizen didn't care too much about the Jews, and besides, had bigger things on their mind with the war.
Their democratic system stopped being legitimate once the Gestappo formed. Besides, there still would have been war because Hitler invaded Poland, France, the Low Countries, Denmark, Russia, and Norway. You think he would have done these things had France and Britain put their head in the sand?
You dont need Willing enemies to start a war. Dumbfuck. Invasion is unilateral.
Without the war to keep them focused outward, would more and more people have stood up for the Jews internally?
You said it yourself. Those who did were martyred. They did it in countries actively resisting Nazi occupation. You dont think they could have done so internally?
Would there have been a coup had we just waited a little bit longer?
The Abwehr tried. It was called the Stauffenberg plot. It failed and the head of the Abwehr was tortured to death. Even had an assassination been completed against Hitler, Himmler would have taken over, and he was the platonic form of murderously insane.
Maybe a more general coup? How exactly would that have been accomplished? Do you you have any idea how hard it is to coup a properly industrial state, let alone a militarized totalitarian one, say after a purge of every officer who might rabble rouse in the ranks?
Was there any other way to save the Jews (and homosexuals and so many more) that wouldn't involve throwing away tens of millions of lives and bringing massive destruction?
No. Propose an alternative that is not thoughtless drivel and we might be able to discuss it. I dont think you will have one though.