@p @judgedread One big problem we have is that our instincts regarding the effects of relatively small shifts in the average properties of groups are very wrong:

https://blog.reaction.la/politics/fun-hate-fact-about-the-bell-curve/

This means that we can easily have many friends in a particular group who seem normal without realizing that the group taken as a whole is responsible for an enormous over-representation in trouble. These effects are very powerful, such that refusing to focus one's crime reduction efforts based on them easily reduces their efficiency by an order of magnitude.

All those extra non-racist investigators have to be *paid* -- this means higher taxes. Also, as you well know, if you have enough police in a state, it becomes a police state.