To the beat of traditional American Indian drumming, Eugene Mills joined Carson High School classmates dancing Wednesday in solidarity with the global environmental demonstration Idle No More. "I want to make a difference in my community," he said, "and show people you can make a difference in the world."The movement was launched in Canada in opposition to a bill that relaxes protection of Canadian waterways and makes it easier for corporations to lease native land. Hundreds of demonstrations similar to Carson High's have been held throughout the United States. Carson's demonstration involved about 20 dancers, three drummers and dozens of …