Urban Philosopher, Minneapolis, Minnesota, 1978 (by Robert Holmgren)
I’m not certain, but I think this is Lawrence “Larry” F. Johnson, a familiar Twin Cities counter-culture figure during the 1970s. Between 1969 and 1996, Johnson—writing under the pseudonym Ernest Mann—published 138 issues of the Little Free Press, a mini newspaper decrying the evils of “wage slavery.” He apparently also had a unique fashion sensibility. You can read more about him here.
Photo via Flickr: Menlo’s Photostream