Ari Natter, renewables and energy efficiency reporter for Bloomberg BNA, tweeted today that he was detained by Capitol Hill police. His crime? He was simply doing his job. Natter attended the American Council On Renewable Energy conference to cover the event. EPA chief Gina McCarthy was a speaker. After she made her remarks, Natter attempted to ask her a question. After all, that is what reporters do. The content of the question was not disclosed in Natter’s tweets, but he did tweet about his experience of being detained….