Walked out of my apartment this afternoon on the way to work and spoted two pair of rather distinctive looking teenage boys.
"Good afternoon Ma'am, how are you today...?"
OK, first off, I am not a "ma'am". Second of all, on my way to work, not interested, please go away.
I actually know someone who managed to get himself "blacklisted" with the local group back home. He pretended to be interested and then over the course of a couple meetings he witnessed to them and got them to start questioning what they'd been taught. As soon as the higher ups realized what was happening the underlings suddenly weren't coming around any more!