I am acquainted with the gentleman and actually he is a hard working and well intentioned legislator.  He simply realizes that theatrics is the key to influencing an agenda.  
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The sledgehammer incident generated national attention and resulted in the passage of the sit-lie ordinances.  The incited video beating focused media attention on the Kakaʻako squatter village which has since been demolished.
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As for arrogance and conceit, it is rampant among the local political elites. At least Representative Brower tale the talk and walks the walk, rather than make aspirational speeches whilst posing for photo ops..