Mounting evidence shows masks are effective at slowing the spread of the coronavirus.
Business Insider says research shows the majority of Americans are in favor of mask policies.
As coronavirus cases rise across the country, more and more retailers are starting to mandate masks despite the potential for dangerous backlash.
In most cases, small children and those unable to wear masks for health reasons are exempt.
Sam's Club, Costco, Best Buy, Starbucks, Walgreens, Apple Store, Dollar Tree, Walmart, Kroger, Target.