Martin Luther King, Jr. advocated for equal rights for all people. Rosa Parks was an integral part of that fight for equal rights. When she refused to vacate her bus seat simply because she was black, she was arrested. When Martin Luther King, Jr. heard about her arrest, he spearheaded a bus boycott which started changes for equal rights. Today, on the day we remember Martin Luther King, Jr., download this free app to learn more about Rosa Parks.