So if society's main goal is to make it so that we can live peacefully amongst each other. Then by golly we should have the ability to make it illegal to walk around with a yellow shirt on. In fact it would be so insane to put on a yellow shirt we should have no fear in telling cops (the ones that survive the yellow shirt murderer) to arrest, incarcerate for life said person.
Now, I get that society is hard to change. In this so called Yellow Shirt Means Death world, the meaning and outcome of wearing a yellow shirt has existed forever. So it would be ingrained in everyone. Yellow shirts = fucking bad news.
So let's alter this and present a challenge: Yellow shirts didn't start causing this problem until March of 2020. And to make it even stranger, the death happens 30 days after being in the presence of a yellow shirt. But still 5% die. And now you have all sorts of wacko people that don't fucking care and put on yellow shirts anyway.
Some percentage of society has never seen one of these people die, so they don't believe the yellow shirt causes it. Some of them wearing yellow shirts may have killed people but the person that died 30 days later so it has no effect on them. They don't even know they killed someone.
Anyway, if you didn't read between the lines, I'm saying arrest and jail those that don't wear a mask - because at this point, everyone knows what happens.