just to put things into perspective here...
Nearly the entire side of my mothers family fled a country where the mere mention of the name of a political elite, icon or leader in any way that was not feverish praise was a death sentence. The leadership of the country didn't have the denecy to drag you out of your house in the middle of the night and shoot you in the street like a dog, instead you were thrown into an overcrowded dungeon to languish and rot. My grandfather, who was employed by said regime simply made a comment during a work lunch regarding a giant portrait of the country's leader and was arrested. He was released for a brief period and fled to a neighboring country.
While walking down the street one afternoon he was accosted by two plain clothed security officials, hooded and thrown into a trunk of a car. When he woke up he was back in the dungeon and then extrajudicially executed the following morning. His body was dumped on the side of a road that my mother (who was 10 at the time) would travel on her way to school every morning. That was the last time she and her sisters ever saw her father. We are free to poke fun at, insult or lampoon anyone we wish in this country. Although the rights that make that possible are slowly eroding, the right still exists. So, while we celebrate MLK and honor his memory, we should also celebrate and honor our right to poke fun at him.
Moral of the story, never put anyone above reproach.