Around 1 in 30 people was secretly telling on their neighbors. After unification, it was presented as a dark chapter in German history that had finally come to an end. People would get to look into their own "file" to see what and how much had been written about their daily activities. I was a bit young at the time, but I do remember frequent discussions on TV about how to move on from this, and how to make sure it doesn't happen again.
And now we're talking about reading everyone's private messages on a scale that would be the Stasi's wet dream.
I wonder - if the Stasi had been presented as a legitimate way to fight CSAM - would that have been okay?
I'm not German but the German people I do know don't see them positively. But could be selection bias
[1] §86a StGB "Use of symbols of unconstitutional organizations" applies also to words, not just symbols in the strict sense. It is also enforced in broad coarse strokes for example on the usage of the swastika inside a red prohibition circle (the one with a diagonal bar).
EDIT: Looking back at my comment, I realize it might come across as too negative. If you think shaming politicians is the right way to protest this, go for it.
I just believe convincing politicians that the spirit they summon may easily slip from their control and turn against them is a more likely successful angle.