What are the motifs in Hell's Angels: A Strange and Terrible Saga by Hunter S. Thompson?

Freedom and counter-cuture are motifs through this book. Thompson undeniably admires and, to a certain extent, emulates the Hell's Angels' blatant disregard for the law and social mores of society. He often enthuses over their purposefully intimidating appearance, their deliberate breaking of the law and their casual disregard for the welfare of others.