Found through TPM. Ted Kennedy speaking in Alaska in April 1968 just three days after King was assassinated and filling in for his Brother.
If you are in a hurry fast forward to about 5:10 and listen on as this becomes an amazing recitation of what liberalism is and should be.
Now compare it to this piece of stunning stupidity from Michael Steele today as a defense of conservatism.
UPDATE: It turns out, Jane Hamsher was actually present when Kennedy gave this speech and puts it into some context.