He is the symbol and spokesperson for us. And because of that he deserves a modicum of our respect and support.
Respect is not something that anyone deserves automatically, especially just because of that person's station in life. That's old-school monarchical/oligarchical thinking.
No, a man deserves respect because he conducts himself in a respectful manner.
Anyone who is clearly a liar and a hypocrite deserves not an ounce of respect, be he a stranger on the bus, a colleague, a priest, or even the president of the United States.
If Murdock wants me to respect a president, then I ask for a respectable president. Until then, I and everyone else should call it like we see it.
By the way, take a look at some of the criticisms of John Adams and Thomas Jefferson during their political contest in 1800. So much for Murdock's nostalgic "When I was a boy, people respected the president..."