I know a couple of cops, and as a cop you indeed do profiling on "random" checks.
You simply pick someone where common experience shows that a "hit" is likely. Like, in Munich if you search a black dude with his friends, chances are high that he's got pot on him. In other cities, being young, white and speak with "gangsta speak" and hanging out with your friends can be an invitation for the police to check if you got knives on you. Or if you generally behave nervous, check if the person has an arrest warrant open instead of just looking at the ID card.
There are no official quotas to fill like in the US, but it is definitely better if you profile and have a "good looking" checked person/hit ratio.
"Like, in Munich if you search a black dude with his friends, chances are high that he's got pot on him."
Chances are high that a black dude has pot on him, or chances are high that a dude with pot on him is black? Those are actually two different things.[1]
You simply pick someone where common experience shows that a "hit" is likely. Like, in Munich if you search a black dude with his friends, chances are high that he's got pot on him. In other cities, being young, white and speak with "gangsta speak" and hanging out with your friends can be an invitation for the police to check if you got knives on you. Or if you generally behave nervous, check if the person has an arrest warrant open instead of just looking at the ID card.
There are no official quotas to fill like in the US, but it is definitely better if you profile and have a "good looking" checked person/hit ratio.