A group of scientists are calling it “The Great Barrington declaration”—a strategy to deal with the Covid-19 pandemic by age-targeted reopening. The advocates call it “focused protection”; they say it would create herd immunity. Gregg Gonsalves argues that it will not—and that “we can do better.”

Also: Cell-phone videos of police killing Black people have had an immense political impact over the last couple of years. Allissa Richardson comments on the videos and the new Black protest journalism, based largely on Twitter. Her new book is Bearing Witness While Black: African Americans, Smartphones, and the New Protest #Journalism.

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