New study from McCann unpacks a growing consumer trust crisis The future of brands gets decided here. Join the industry's top marketers at Brandweek for the ideas, insights, and connections shaping what's next. Get your ticket. Consumers are mired in a trust crisis—and that's a problem for brands, according to a new study from McCann. The Truth About Global Brands study, released Wednesday, surveyed more than 20,000 people across 20 global markets.