Survey: Many U.S. students not aware of Martin Luther King Jr.'s contributions

FILE - In this Aug. 28, 1963, file photo, Dr. Martin Luther King Jr. addresses marchers during his "I Have a Dream" speech at the Lincoln Memorial in Washington. The U.S. economy “has never worked fairly for Black Americans — or, really, for any American of color,” Treasury Secretary Janet Yellen said in a speech delivered Monday, Jan. 17, 2022 one of many by national leaders acknowledging unmet needs for racial equality on Martin Luther King Day. (AP Photo, File)