They are less likely than members of the professional political class to allow political calculations to influence their views. And, sometimes, they actually say things that are uncomfortable but true, and that need to be said.
小丑一般都乐于挑衅，而这可以成为他们的优势。与职业政客相比，他们不大可能让政治算计影响自己的意见。而且有时的确会说些有益无害的刺耳的真话。