If you had a magic wand today, and you had one wish - to wipe out all the drug dealers, take them all off the streets and put them in jail, no trial, everybody who sold drugs would automatically be convicted. You know what's going to happen? There's going to be new ones. Why? Because the drug users are going to create them.
When I interview people accused of capital offenses, I never even ask if they did it. I would consider that unprofessional.