PITTSBURGH (AP) Americans facing rising gasoline and diesel prices are cycling about, saddling up, singing out and, sometimes, going to extremes. Dozens of Alabama students are bicycling up to 10 miles each way to their rural high school. An Indiana man was arrested for belting out a protest song from the roof of a convenience store. A sign-maker in Kentucky is riding his horse on business errands. And a Tennessee sheriff is investigating a more disturbing protest: a slain deer hanging from a gasoline station sign. A Purdue University professor who teaches a class on the sociology of protest says most protesters aren't just working toward the goal of lower gas prices. Rachel Einwohner believes they're also making a statement "about their collective identity, as environmentalists or however they see themselves.''