He began his carrier as a Baptist preacher, but went on to lead a sweeping grass-roots effort to end racial discrimination, known as the civil rights movement. Along the way, Martin Luther King Jr. made history and emerged as one of the most influential leaders of the 20th century. Before the civil rights movement began, segregation policies known as Jim Crow Laws kept African American in a separate and generally inferior world from whites. African Americans went to separate public schools, Asian's separate restaurants, and even had to use separate public restrooms. They had to sit in the back of buses, and gave up their seats to any while people standing. But in 1954, Jim Crow suffered a stunning defeat, the Supreme Court declared that separate schools for black were inherently unequal in a case called Brown Vs.Broad of Education. The following year, in Montgomery Alabama, a tailor's assistant named Rose Parks refused to give up her bus seat for a white passenger. Parks was arrested, but Martin Luther King organized a full-fledged boycott of the Montgomery city bus system. 13 months later, the buses intergrated. The Montgomery boycott inspired more efforts to end segregation. In 1963, King and other civil rights leaders organized the march on Washington. More than 200,000 people came to the nation's capital to demand equality for blacks and the congress to pass pending civil rights laws. Standing at the base of Lincoln Memorial, King had the words 'I have a dream today' to describe his hope for the future which all men would be brothers. The civil rights movement was changing the nation. In 1964, congress passed The Civil Rights Act, which made racial discrimination in public places illegal. The same year, King was awarded the Nobel Peace Prize. On April 4th, 1968, Martin Luther King was assassinated in Memphis Tennessee, but the movement he helped lead lived on, inspiring other groups such as Hispanics, women, and the disabled to fight for equal treatment under the law and completing King's legacy of great social justice for all of Americans.