who tricker-treats at an abortion clinic?
They were not trick-or-treating. It's not a residential area where anyone would be available to hand out candy; it's a commercial area with a group of townhouse offices. The people who were there were praying. Local Christians from various churches take turns praying several hours a day between Sunday night, when the actual injections take place, and Wednesday morning, when Carhart leaves to go to his other death camps. There is a priest or minister who prays with everyone.
Yes, people do bring their children. One of the reasons is that the girls and women walking into the clinic are sometimes moved by the sight of these adorable kids and stop to talk; a number have changed their minds about abortion as a result.