Some light reading about masks, and links to studies about masks in this document, from a letter written by the Ontario Civil Liberties Association to the WHO:
(Linked studies have some text that summarizes the main result)
QUOTES from the letter:
"We believe that the WHO recommendation is harmful to public health, and harmful to the very fabric of society. The recommendation is used by governments as a ready-made justification to impose mask use in the general population. The resulting legislative dictates and policies of coercion broadly violate civil, political and human rights. We ask that your ill-conceived recommendation be retracted immediately."
"Second, more importantly, you fail to mention that several randomized controlled trials with verified outcomes (infections) were specifically designed to detect a benefit, and did not find any measurable benefit, for any viral respiratory ...