What is the fine-grained topic of the following text: WASHINGTON (PAI) — The causes the late Dr. Martin Luther King fought for, including racial justice, economic equality and ending a misguided war “are very much with us today,” says a labor historian and author of a new book putting the civil rights leader’s last days into a longer and wider perspective. Only return the topic.
Dr. Martin Luther King's fight for racial justice, economic equality and ending a misguided war according to a labor historian's perspective.