Dr. Martin Luther King, Jr. fought for the rights of African-American people. In 1963, he gave his most famous speech to over 250,000 people in front of the Lincoln Memorial in Washington, D.C. It became known as the “I have a Dream” speech. In his speech, he called for an end to discrimination. Discrimination is the practice of treating people differently or unfairly because of their color, religion, age, gender, culture, or beliefs. King’s “dream” was that all people would be treated equally and that all people would come together as Americans.