Since you asked, here is peer reviewed research of large scale epidemiological data showing that COVID-19 spread significantly slowed down in states that mandated mask wearing vs those that didn't. healthaffairs.org/doi/10.1377/hl…
https://twitter.com/TheMTRCC/status/1351225273333784578
In other words, people are alive today because other people paid attention to science and wore a mask. That is nothing to be angry about.
Here is a similar study looking at international data that found slower spread in countries with more cultural receptivity to mask wearing. researchgate.net/publication/34…
If you are more of a visual learner, this video showing the reduction in the spread of aerosolized particles - the primary means of COVID-19 spread may be helpful. nejm.org/doi/full/10.10…
This is why the CDC recommends mask wearing for all today. Encourage you to read all of this. cdc.gov/coronavirus/20…
To be sure, early on there was concern about our lack of widespread mask availability, in no small part due to Trump's failure to refresh our PPE stockpiles, or to read the pandemic preparedness guidelines that Obama left behind.
That led many, including Dr. Fauci to encourage masks to be preferentially reserved for frontline health workers. As mask supply has grown, and as we have gained more understanding of the modes of COVID-19 transmission, that guidance has changed as well.
This is the way science proceeds. There is no debate on the effectiveness of masks among trained scientists any more than there is a debate about whether the earth goes around the sun in a circular or elliptical orbit. One view was revised as more data came in.
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