I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin, but by the content of their character. I have a dream today!
As can be seen with hashtags like #SolidarityisforWhiteWomen and #WhiteWomanPrivilege, what Social Justice Warriors do is take legitimate gripes about racism - about people being judged for their color and not for their character and turn it into judging people based on their color.
King would have been appalled by SJWs.