@ first while watching the vids, I was thinking it's mean to confront them in this way.
We've been in fs ourselves with argumentative householders and know how uncomfortable that is. But that's not necessarily that other person's fault--it's because our beliefs were inaccurate and we just didn't like fs.
The longer I watched, I realized this is probably a really good idea.
Granted, other strategies have the potential to reach more people, but this one has promise too. They are on a public street, so as long as you're polite and behaving legally, giving them pressure can discourage them from this activity, thus preventing poisoning more minds. And maybe a few passersby might hear and benefit as well.