USA Today: Hundreds of demonstrators on Monday urged Congress to pass legislation to reduce greenhouse gases, and they targeted the government’s own Capitol power plant as a symbol of the problem. An enthusiastic crowd of mostly young people marched from a park near the Capitol to the power plant several blocks away, where they planned to block entrances to the plant and were prepared to get arrested. The group chanted along the way, “We don’t want the world to boil, no coal, no …