The Secret Service personnel put in an enclosed space with a contagious Trump for a photo ophttps://twitter.com/kaitlancollins/status/1312866037675814913 …
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He was probably sitting safely in his own home, much safer than walking around public spaces in a mask, whether Chinese paper one or homemade cloth. 
Masks prevents projection of large amounts of the virus in distances that will reach people. If you're in confined space, air becomes stagnant & thus you greatly increase your exposure. This is not rocket science, turn on your critical thinking for a moment & put away your bias.
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