Martin Luther King Jr. was a civil rights leader in the United States who fought for equality and justice for African Americans. He believed in peaceful protest and inspired millions with his speeches, including his famous “I Have a Dream” speech. King led marches and demonstrations to end racial segregation and discrimination. His leadership helped pass laws that protected civil rights. In 1964, he received the Nobel Peace Prize for his fight against racial inequality. Though he was assassinated in 1968, King’s vision of justice and harmony continues to guide people in building a fairer, more equal society.