When he was killed in 1968, he was planning a march of striking Memphis sanitation workers
[DOC] [TLE] Union workers march on King death anniversary - CNN.com [PAR] Apr 4, 2011 ... Union workers are set to march Monday, linking their fight for their rights to the ... 
King was killed in 1968 in Memphis, Tennessee, which he was visiting in support 
of striking sanitation workers, unions pointed out Monday.