How to Engage with Popular Messengers who Exploit Fears?

If you are late to the Food Babe phenomenon, by which I mean the rise of a food activist named Vani Hari, there are no shortage of recent media articles exploring her fame. The Atlantic profileis among the best, because it is not judgmental and it gives voice to the science-based critics who are exasperated by her influence. The journalistic fascination with Hari is reflected in The Atlantic's subhead: