P&G Brand Director Pankaj Bhalla tells Ad Age its goal was to provoke conversation, so Gillette no doubt expected polarization. And this is, after all, an era when brands increasingly take a stand on social issues, as Nike did with a ballsy campaign that sided with Colin Kaepernick on the issue of NFL players kneeling during the national anthem. But there's one glaring difference between Nike and Gillette: Nike's primary customers are young urban millennials who support brands that stand up for causes and tend to sympathize with Kaepernick's protest. Many of the customers for Gillette, a 117-year-old brand, are...