Meena Venkataramanan writes: “While insurrectionists were plotting to storm the US Capitol on Jan. 6, 2021, they took time to write and send a letter to an institution two blocks from their target: the Folger Shakespeare Library, the world’s largest collection of material related to the English playwright. The letter explained that the insurrectionists would create a 2.4-mile blockade ‘surrounding all buildings to which the US Capitol has underground tunnels to’—including the John Adams Building of the Library of Congress, with which the Folger shares a block—presumably to prevent those inside the Capitol from escaping through the buildings.”