Sum Of Us' spoof ad features a love story centered around Doritos, ending in a shock discovery that the brand destroys forests during production - an ad PepsiCo has coined a 'public relations stunt' PepsiCo has slammed a campaign from Sum Of Us against its Doritos brand that suggests the chips contain unsustainable palm oil. Consumer activist group Sum Of Us launched a campaign against the Frito-Lay Doritos brand in December and recently published a spoof advert suggesting Doritos contained unsustainable palm oil sourced through deforestation.