When hunting prey, remember these words. You're conducting a sting operation, not an air raid. Don't chase moths with a blow torch. Light an attractive flame and draw them in for the kill. Know when to back off and when to come back at a more opportune time. Be gentle. Talk lovingly to the little lamb. Speak reassuring words. Over the raw flesh of your malice, wear the skin of civility. Stroke his cheek with one hand as you slit his throat with the other. 

Do your job with cold blooded craft, under the veil of warm blooded tenderness. Hold their hand lovingly, whispering promises of happiness, as you lead them into the eternal night.