There is some scientific question about whether you ought to wear a mask when you are still maintaining a six foot distance whether indoors or outside.
The Hill (4/11, Deese) reported that a study of air samples in hospital wards treating COVID-19 patients, conducted by researchers at the Academy of Military Medical Sciences in Beijing and published in Emerging Infectious Disease, found traces of the disease “could travel up to 13 feet, more than twice the distance current social distancing guidelines mandate.” Researchers “found that the virus was most heavily concentrated on the floors of the wards, citing a potential cause for this could be due to gravity bringing the virus droplets to the ground.” They also “found that aerosols containing particles of the virus were primarily concentrated closer to the downstream from patients at up to 13 feet while some smaller quantities were found upstream, up to eight feet.”
However as I see people walking around the senior community where I live without wearing their masks on these lovely sunny spring days with trees and flowers blooming without masks and I ask a few of them why they are doing this they usually say it is because they are outside.
This is a very progressive senior community where just about everyone took to wearing safety pins to show solidarity with those Trump was demonizing and targeting for deportation in 2016.
Vox had an article about it:
From VOX: How the safety pin became a symbol of unity
For many of us, up until this week the safety pin’s utility was only realized in its absence. You rarely need them, and when you do you can never find one; few people ever have them on hand like gum or mints. They’re most useful when a button pops off your shirt or — according to pop culture imagery — to fasten a baby’s cloth diaper.
But they’ve taken on a whole new meaning in the week since the presidential election, as a Brexit-inspired symbol of "safety" meant to convey that people who wear them are allies to those who fear or are experiencing Trump-inspired racial and religiously motivated harassment and abuse.
While wearing masks every time you are in public could be seen as sending a message to Trump and those who support him, it is far more than a kind of demonstration of so-called wokeness.
This is about the health of the community where you live. It is also about the feelings of your friends and neighbors.
Even if you believe that if you do not wear a mask outside it does not jeopardize the health of anybody lest you get too close to them you are also sending them the message to some, not all, but some people that you do not care about their fears, their anxiety and sensibilities.
You simply have no way of knowing who you may be making nervous.