That kind of way of handling them is wrong.
I would keep going normally and let them do their show without caring as long as they don't intrude or do shit to hurt me or my business.
I mean can you deal or dialogue with brain dead people?
Just to say that for me anyone can do or thinkg whatever they want but none has the rights to come bothering me for what I eat or think.
If I wanna eat meat who the fk are you to say it's wrong? Do I go around you telling you how you're murdering plants !?!??! poor little seeds who struggled all their life to grow just to be eaten by you vegan!!!!
Be the change !!! be Breatharianism!!!
http://rationalwiki.org/wiki/Breatharianism