A recent headline in the Guardian posited the question: “Should we cancel Picasso?” This query was prompted by the 50th anniversary of Pablo Picasso’s passing — he died on April 8, 1973, at the age of 91 — and an upcoming slate of exhibitions honoring and, in one case dishonoring, his art. The erstwhile Spaniard was not, as it turns out, an exemplary human being, but we all knew that.