In the infantry, the only successful combatants have to be able to kill without any second thoughts. Hesitation is death to yourself and the men around you.
The next hard part is getting them to stop after they've started. No place for ladies (or soft men), period.
http://wgntv.com/2016/10/05/new-police-review-board-faces-final-approval-today/
You have no idea what is happening in Chicago. The police are being pissed on here. They have the Obama's DOJ and the Mayor's Office breathing down their necks. You bringing YOUR biases into this is beyond the pale.
I was being a bit facetious.