"If these murderers think they will get away with murder, they are sadly mistaken."
As a side note (from the police, of course): "If you think you might be a murder victim in the near future, you can be a big help to us and everyone if you would please get your affairs in order."
“It’s like the police are saying “we are fully prepared to deal with the murderers in our cities. We will arrive after they have committed their crimes (murder in this case), arrest them, and bring them to justice.”
Clipping a cop onto your utility belt is obviously not an option.
Be prepared and always ready.