There was a very interesting interview with Thomas Kliche a while ago in German newspaper Sueddeutsche Zeitung.
A large and established part of society is made up of people who believe in authority. These are people who were educated to submit to power, believe in strength, and despise weakness. It is enough if the moderate give up and become silent. Then authoritarians can prevail.

This quote is Kliche’s key point and I totally have to agree. I can see this happening in Germany right now:
So, why don’t we hear more from the last few sane folks in Germany?
That is because people are lazy by nature, and people don’t want to get hurt. That’s why so few people actually speak up. The rest either fear getting prosecuted, or, even worse, think it’s too late, or no use at all to say something.