They want followers who will not question orders, authority which is why they weed out the truly intelligent, the "thinkers." They want blind faith in leadership. Brass says "Break down that door, there's a dime bag of weed in there. We don't need a warrant." Intelligent officer wonders why that's necessary and why no warrant and if it's even constitutional. Said officer will ask questions, maybe refuse to participate. Less intelligent officer says "Let's fucking do this!"