That wasn’t a whistle (and everyone knows it wasn’t the dog)
..........here the analogy with an actual dog whistle doesnt work. A dog whistle sends a clear signal to one group the dogs who alone are capable of hearing it but to everyone else it makes no noise and goes unnoticed. Bushs dog-whistling to evangelical voters included signals that only they would pick up on, but those little snippets of churchy-talk didnt change the meaning of what he was otherwise saying. His little allusions gave his words additional resonance for evangelical listeners, but apart from that little pat on the head, they werent being told anything different from what the rest of the electorate heard.
But the so-called dog-whistling to white racists doesnt work like that. This kind of coded language is nothing like a dog whistle, because everyone can hear it and everyone can understand it. Everyone knows exactly what it means. When former Philadelphia Mayor Frank Rizzo appealed to segregationist white voters with talk of law and order and getting tough on crime, everybody knew he was talking about keeping black people subordinate and marginalized. When President Ronald Reagan spoke of states rights or railed against welfare queens and strapping young bucks buying T-bone steaks with food stamps, no one was left scratching their heads trying to puzzle out what he meant by that.
These arent dog whistles. Theyre dog farts. Which is to say theyre attempts to blame a fart on the dog when everyone knows it was you who just broke wind.
more:
http://www.patheos.com/blogs/slacktivist/2016/03/10/that-wasnt-a-whistle-and-everyone-knows-it-wasnt-the-dog/