SAN FRANCISCO -- A group of Klamath River Native Americans kicked off a road trip today from San Francisco's Fisherman's Wharf to demand removal of several salmon-killing dams on the Klamath River. Members from the the Yurok, Karok and Hoopa tribes plan to tow hand-carved redwood canoes to Omaha, Neb., to a Berkshire Hathaway stockholders' meeting. The company, headed by billionaire and philanthropist Warren Buffett, owns PacifiCorp, the firm which holds the four hydropower dams on the Klamath River blamed for decimating local salmon runs. "We hope to meet with Mr. Buffett and convince him to do the right thin