It' a circle of back patting. "I like dogs, do you like dogs?" "Oh yes, I love dogs! Dogs are the best!" "That old guy has loved dogs his whole life, loving dogs must be the best thing to do!" "Dogs!"
I understand why it works. Finding an authority or majority that claims it can reassure a person or their belief.
What I'm saying is, I really don't care for dogs and would prefer you stopped letting your dog crap on my lawn.