WASHINGTON — Lefty Maine Senate hopeful Graham Platner, a Marine veteran who has positioned himself as a staunch anti-war candidate and critic of the US military campaign in Iran, once defended a Marine who urinated on a dead Taliban fighter, newly unearthed Reddit posts show. The left-wing populist further described war as the “most enjoyable experience of my life” and combat as the “[b]est goddamn thing in the world” in a series of since-deleted Reddit posts from 2013 through 2020 reviewed by The Post. “I find the urinating on bodies as a poor choice, but only because of the current...