Here's the deal.
I have $1,000,000,000 I don't need. But I need someone dead. You will NOT be caught. The person you kill you will never know. They live on the other side of the planet. You will never know a thing about them. Whether they were an upstanding citizen, child molester or serial rapist. You won't even know if they really died. But I'm going to give you a black remote control with a small red button. When you press that button, that person will die, and you will get the $1,000,000,000 cash. Will you press the button?
I am curious to know, why every time the mysterious button always in Red color, even criminals use RED buttons to do any evil stuff, I agree that police authorities wants to caution the people as marking as RED while there is any danger. But Why Criminals also marking RED, to whom they want to caution about such stuff?