Get over the idea that you or anyone else can change other people's behavior or attitudes, since you can't unless you are willing to put in a whole lot of more than whatever the film maker is giving these folks. If you want to do a homeless person a solid, give them some money. They will appreciate the gift, since that's what it is. Don't worry about how they will spend it because once the gift is in their hands it is no longer your responsibility.
Thank you so much for reading and for the comment ! Different opinions make the world go ‘round.