Anti-communist protests in Cuba are threatening to dismantle one of the last vestiges of former president Barack Obama's diplomatic legacy. The unrest has come as a shock to journalists and other Democrats who cheered the Obama administration's efforts to normalize U.S. relations with the communist regime. The controversial initiative, spearheaded by failed novelist Ben Rhodes, culminated in 2016 with Obama's visit to Havana, where he attended a baseball game with Cuban dictator Raúl Castro. The New York Times report on the Cuban protests opens with the following oddly worded passage: Shouting "Freedom" and other anti-government slogans, thousands of Cubans took...