That's because their solution was to judge someone's criminal nature based on the colour of their skin, as opposed to the likelihood of them committing the crimes they're being "prevented" from committing.
Christ, increased police presence would probably have sufficed.
now you're just pissed because underneath you know cultural profiling works and it unsettles your belief.
btw you cannot magically materialize unlimited police at the correct time/place. what kind of fantasy world you live in? they bolstered numbers however they could, but covering a city spreads them all a lot.
I like your little euphemism there. Let's not sugarcoat this, it's profiling people based on the colour of their skin, and that, if you'll excuse the bluntness, is utterly fucking stupid. It doesn't "unsettle my belief", it goes completely against it.
I'm curious for the source of your assertion that racial profiling works, though. Seems like security forces of the world are missing a trick if you're right.
The Cologne police also don't have to cover the entire city, just the main parts where people gather. This can be made easier by holding official gatherings or outlining places where people can celebrate together. Strategic placement is better than trying to assuage the town in security. You don't need unlimited police to do that.
Prevention is better than the cure, especially if that cure involves labeling people criminals based on skin colour.