What’s trickled down is the hate and the solipsism of the conservative elite who have pushed what they knew to be the bogus trickle down economic theory. It is a trickle down of morality not of the economy. They have connected with the baser elements of our morality, that, yes, exists in all levels of society. Notwithstanding the virulence of these baser emotions extant in all sections of the non-elite, it has been the conservative elite that have prayed upon and stimulated these emotional and (im)moral proclivities. No matter how disguised ( with perhaps some self-delusion) the fear and greed of our society is trickling down from , supported by, the elite who will best be served by such divisive tactics.
As for the economic trickle down malarkey, I am with David Cay Johnston who refutes that and more accurately calls it "Niagra Falls, Up"