Seems to me in libertarian terms that the store has the right to require customers to wear a face covering that meets whatever standards they set, and the customer equally has the right to wear any mask they please or none at all at home or in public where not properly prohibited by law - but not on someone else's private property. Thus, the store was within its rights to make the customer leave, but probably didn't help themselves in that by insulting the customer.
If after all this, the Portland police chief is still unwilling to arrest any rioters, and the Portland District Attorney is still unwilling to charge them even if arrested, then it is time for the Federal government to write Portland off as a loss, remove all Federal employees, money and possessions from the entire area, and if anyone needs to be arrested in the process, be sure it's Federal officers doing the arresting and charging and jailing and trials.
How long would Soros and his friends in the swamp allow President Trump to live if Trump lost in November? Of course President Trump is fighting for his life -- as are all the coup plotters just about to be finally held accountable for their countless acts of treason if Trump wins.
And this is supposed to bother the Brits why?
A point just made in the second edition of the book "The Black Swan" that I'm currently reading is that printing money to keep an economy from crashing only works for a while, after which hyperinflation may be expected.
Our short-sighted politicians of both parties have been cheerfully dancing on the lip of that active volcano ever since Ross Perot first warned about the danger back in 1992, militantly refusing to learn anything in all that time and continually pushing to see how much more they can get today with no thought of surviving tomorrow.
When first elected to Congress, Kamala Harris claimed to be Indian-American. Her other parent was from Jamaica - again not African American. As California Attorney General, she laughed about sending thousands of African American men to prison for drug crimes, even though she was an illegal drug user herself. Why again are African Americans supposed to be happy about her nomination?
Not tested was face shields. If the goal is to keep droplets from your breath reaching other nearby people, those should be great, as nothing but light passes through them.
They aren't perfect, because air can leak around them, but air can also leak around most other masks too.
When I have to go indoors away from home, I wear both a face shield and a freshly-washed cloth mask. But outdoors, it's just the face shield.
Any city that would support a terrorist standing in the roadway with a gun over a motorist who ran the terrorist in the roadway over to avoid getting shot is a city that no sensible American should ever visit again. Let's see how they like life with no more deliveries of anything to their city.
My wife and I use a clear face shield when we are visiting others outside our home. That satisfies the face covering required Nazis, without making it hard for us to breath or fogging our glasses, and the shields are easy and quick to disinfect with an alcohol spray.
When shopping indoors, I add a face mask for a bit more protection during the few minutes I'm in that area of increased risk.
The two problems I see most in others are: 1) not wearing a mask so it actually covers both mouth and nose as it should, and 2) reusing masks without cleaning them between uses. Either failure can make the mask worse than useless.
As someone reminded me this morning, Bill Gates has never even figured out how to successfully avoid computer viruses, so has no business telling anyone what to do about real viruses.