The state ruling was upheld by the U.S. Supreme Court in Walker v. City of Birmingham. Judges ruled King and other civil rights activists failed to use proper procedures to test the validity of the injunction.
King spent three days in the Birmingham jail. He was assassinated April 4, 1968, on the balcony of the Lorraine Motel in Memphis, Tennessee.
“As the first African-American sheriff to be elected to represent Jefferson County, it is very important to my administration to memorialize the work of Dr. King and other Civil Rights activists,” Jefferson County Sheriff Mark Pettway said in a statement.