The worst part of the entire season (and I'm not mincing words, I mean THE WORST) is the way the CIA has been shown lording over the German authorities as if they were in a fiefdom.
Agents detaining people in broad daylight, manning over drones, running operations by themselves and without any kind of supervision, allowing Carrie (a civilian) to carry a gun in a country where they are severely restricted... It's like they think Germany is some lawless hellhole in the vein of Afghanistan where the CIA can do as it pleases.
But the most absurd thing about it is that the show tried to be somewhat realistic in terms of language, locations and cultural norms. How they could fuck it up so bad?