Before protesters in America and Europe began painting over statues, or toppling them, or hanging them from trees, or rolling them into the nearest river, the historian Paul Farber noticed that people were putting masks on them. In the early days of the pandemic, from Wuhan to New York, Valencia, and Limerick, anonymous people placed covid-19 coverings over the faces of local monuments. There was something tender, even a little funny, about these gestures, the kind of thing done for Instagram: a photo of a masked Patience and Fortitude, the two lions that sit outside the main branch of the New York Public Library, went viral.