If others don't want to wear a mask just take precautions to work around it. Going into stores trying to make a point and essentially making a fool of themselves isn't the way to go about things. It's the mindset of while they think they're right, there's also the chance they're wrong and they're not only putting themselves at risk but others as well. I don't agree with those who refuse to wear masks, but I respect their decision not to do so. Businesses are fully within their rights to refuse service if someone is lacking a mask as well though. In that instance it doesn't matter if you believe masks work or not, even the individual workers in said store. The latter are doing as they're told from the higher ups, it's just how it is. Just shop somewhere else, order from home, or wear a mask.