Indypendent: Just blocks away from Capitol Hill, a new conversation is sweeping the streets. Within the crowded sidewalks and cafes along H and 7th Streets, certain words likely will catch your ear: environmental sustainability, green economy, direct action, colonization, coal power plants and capitalism. All weekend, more than 12,000 college and high school students traveled across the country for the second Power Shift conference, a meeting-of-the-minds for students serious about taking …