Can Art Shed Light on the Ethics of Capital Punishment?

More than 50 years later, California still lists lethal gas as a legal execution means. So do five other states: Arizona, Mississippi, Missouri, Oklahoma, and Wyoming, although Mississippi and Oklahoma, which use nitrogen hypoxia, don’t use that term. (More on that below). I learned this as I searched on my phone standing in front of John Singer Sargent’s monumental 1919 painting “Gassed,” which is on display in the New-York Historical Society’s exhibition “W​orld War I Beyond the Trenches” (through Sept. 3).