Martin Luther King Jr. made his "I have a dream" speech during the March on Washington FOR JOBS AND FREEDOM

Remember these, if not word for word, the meaning and intent, the next time you hear a conservative whine, bitch, and complain about 'class warfare'. 

That is a dog whistle for supporting social injustice, and the oppression of others.

Martin Luther King, Jr. quotes from Wikiquote.org:

"You know my friends, there comes a time when people get tired of being trampled by the iron feet of oppression. There comes a time my friends, when people get tired of being plunged across the abyss of humiliation, where they experience the bleakness of nagging despair. There comes a time when people get tired of being pushed out of the glittering sunlight of life's July and left standing amid the piercing chill of an alpine November. There comes a time."

- Martin Luther King, Jr., Montgomery Bus Boycott speech

"I understand that you have an economic system in America known as Capitalism. Through this economic system you have been able to do wonders. You have become the richest nation in the world, and you have built up the greatest system of production that history has ever known. All of this is marvelous, but Americans, there is the danger that you will misuse your Capitalism. I still contend that money can be the root of all evil. It can cause one to live a life of gross materialism. I am afraid that many among you are more concerned about making a living than making a life. You are prone to judge the success of your profession by the index of your salary and the size of the wheel base on your automobile, rather than the quality of your service to humanity. The misuse of Capitalism can also lead to tragic exploitation. This has so often happened in your nation. They tell me that one tenth of one percent of the population controls more than forty percent of the wealth. Oh America, how often have you taken necessities from the masses to give luxuries to the classes. If you are to be a truly Christian nation you must solve this problem. You cannot solve the problem by turning to communism, for communism is based on an ethical relativism and a metaphysical materialism that no Christian can accept. You can work within the framework of democracy to bring about a better distribution of wealth. You can use your powerful economic resources to wipe poverty from the face of the earth. God never intended for one group of people to live in superfluous inordinate wealth, while others live in abject deadening poverty. God intends for all of his children to have the basic necessities of life, and He has left in this universe "enough and to spare" for that purpose. So I call upon you to bridge the gulf between abject poverty and superfluous wealth. "
- Martin Luther King, Jr., sermon, Dexter Avenue Baptist Church