 Complete the following phrase:  Mark starts out as a radical at Walden College, and leads several peace rallies in his first appearance, he referred to himself as Megaphone Mark Slackmeyer. The character was initially modeled after a Yale undergraduate activist, Mark Zanger. Mark seized the office of Waldens President King twice he considers the first time a failure as President King was far too cooperative, and in 1972 took a cross-country trip with Michael Doonesbury to Washington, and eventually to that years 