My grandfather was an actual Nazi, so I kinda know what the wrong culture can make of people.
The common people are not "all the same". They can be made to hate and kill others, and under some leaders, in some eras and so on.
Yet — extrapolating from predominant culture in a country to everybody living in it is wrong as well.
I grew up in a 40% right wing environment and I got out of there as soon as I had the chance. Others either don't have the chance or can't so it because other things bind them to a place. The free spirits in such places suffer immensly. Yet you could argue that you are not helping them if you just tolerate their outrageous leaders.