Possible Clues:

• One of Homer's in-laws
• Civil rights march site, 1965
• City famously visited by Martin Luther King Jr.
• Aunt of Bart and Lisa
• Town of a civil rights march
• City on the Alabama River
• Site of 1960s marches
• MLK vote-drive city
• Where M.L.K. led a voter drive
• Alabama town in '60s headlines