That's Beetle Juice in Your Vegan Frappuccino
Soy Strawberry Frappuccinos, already one of the most unpleasant Starbucks drinks I could think to order, have been using something called cochineal extract to dye the drinks that murky Pepto Bismol Pink. Cochineal extract, it turns out, is made from South American beetles and was adopted in an effort to stop using artificial ingredients. But the vegan community will not have it; they have, of course, started an insufferable petition demanding that Starbucks stop using the dye.
You can't win, Starbucks. Pump those bevy's fully of chemicals and the people are outraged. Switch to Mother Earth's walnut of the animal kingdom, and piss off all the vegans. Where your coffee brews, war shall follow.