Personally, I think MLK Jr was one of the greatest orators of all time. I have books on all his speeches, all are inspiring.
If you read his speech "A Time to Break the Silence" you could ask, outside of the fact that this speech is from a different time, what has changed?
This is his speech outlining why he was against the Viet Nam war. Many protest against the wars their countries are involved in....but few can articulate why they are protesting like MLK Jr could.