There are some Americans who have become universal, societal icons. Fill in the blanks yourself. It doesn't always matter what it is they actually did or if what they did was important. What matters is that these people are admired by everybody. That acceptance helps to define who we are and give us cohesiveness.
There are other Americans who are loved by a large portion of society but ignored or even despised by another large portion. Fill in the blanks yourself. These figures of controversy illustrate to ourselves and the rest of the World, continuing discord among the American people.
Glen Beck has singlehandedly, over the last 18 months made Martin Luther King Jr., accepted as an American icon by Right Wing America. It doesn't matter how he did it or for what reason. He did it. It's a great thing. It will make a difference in who we are.