As the Trump administration wages an all-out assault on climate protections and renewable energy, activists are gearing up for demonstrations this Sunday to hype up solar power and energy efficiency. The national day of action, called Sun Day, will be spearheaded by veteran climate activist Bill McKibben. Trump has aimed squarely at clean energy, McKibben told the Guardian. So we need to fight back, and in this case we get to play not just defense but offense too.