#DeleteUber marked a turning point in online activism, with social media users banding together to take the moral high ground against Uber's badly-timed promotion. But did people ditch the app because they genuinely disagreed with the brand’s actions, or so they could post about it on Instagram?

"Why make your insecurities our problem?" reads a tweet from supplement brand Protein World, after complaints poured in over a controversial billboard. It's followed by a passive aggressive winking emoji and tweeted directly at a potential customer – breaking every rule in the social media playbook, right?

There's one rule that explains how trends catch on; visibility. And more than half of us are now willing to pay more for products that are visibly socially responsible. Professor Lynn Kahle, who studies brand values, explains to Canvas8 why a brand’s values matter and how they influence people.

Who knew Kendall Jenner, a can of soda and a staged protest would be such a recipe for disaster? Certainly not Pepsi’s creative team, who are responsible forthatspot. While the ad clearly missed the mark, it’s also a cautionary tale of the power of the crowd, and the tendency to revel in outrage.