Beginning Wednesday, any customer entering a Denver business will be required to put on a mask.

That part is straightforward. But what happens when people refuse to do so?

It’s a question that cities and states around the country are grappling with as mandatory mask orders become more common to help slow the spread of the novel coronavirus. While compliance only takes a cloth mask, the mandate has generated strong backlash in parts of the country, with deadly consequences in at least one instance.

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