From Jesse Jackson op-ed for CNN:

Dr. King was an occupier, our country occupied by the vicious and divisive legal segregation. His last great campaign was the Poor People’s Campaign, aimed at occupying the Mall in the nation’s Capitol to address abounding poverty, the demands for a job or an income for all, health care for all.
When Dr. King was shot down on April 4, the campaign moved on to Washington DC, setting up Resurrection City and occupying the nation’s Capitol in tents. It was the precursor to today’s Occupy movement. We prevailed.

http://edition.cnn.com/2012/01/24/opinion/jesse-jackson-opinion/index.html?hpt=hp_c1