Can Martin Luther King Jr. be considered a Knight of Faith?

Can Martin Luther King Jr. be considered a Knight of Faith as Kierkegaard puts it in Fear and Trembling in regards to Abraham?

I was reading the letter from a Birmingham Jail and was curious if he could also be considered a Knight of Faith or was Abrahams ordeal completely different, having (supposedly) spoken directly to god, whereas King did not.

Link to the letter http://www.africa.upenn.edu/Articles_Gen/Letter_Birmingham.html