The fascism definition we are using is social control through mythology? If so the Madison avenue already has us.
I think that's always been the way of things, right? Madison avenue might have us, but they've mostly kept themselves to toothpaste and sugar water. I imagine: "Why should we worry people about climate change when they have already expressed to us that they don't want to worry about it? Also, look at what climate change does to our holiday travel numbers. We've only got time for some much news, why spend it giving people something that they don't want?"
This of course is already happening - happened? southern english has a tense "been happening" that is perfect. As soon as the techniques of marketing/market research are applied to everything (and they have been) there is no safe ground to stand on. have you seen http://www.pbs.org/wgbh/pages/frontline/shows/persuaders/vie.../ as well as having an awesome section on the Juggalos it talks about the feedbackloops market research produces.