You're saying it's just a shot in the dark that he's quoted almost verbatim Vernon Robinson's TV ads?
I don't think so.
I'm saying that what Vernon stated rings so true that others who feel the same way are bound to remember and repeat it.
Or the man came up with it on his own due to his own train of thought. Live in a war zone for a while and see all the niceties and trust in one's neighbors give way to a siege mentality.
They come here from their countries because of this only to recreate the same hell in the enclaves they carve out as they don't know any other way. It's ironic in the most horrible sense of the term.