Via Bitch | Lab (who seems to know Brad DeLong somehow), we learn of a campaign to vandalize the Wikipedia entry for Martin Luther King, Jr.,
Martin Luther King, Jr.s biographical entry on the free online publicly-edited encyclopedia Wikipedia has been repeatedly vandalized today, an ongoing attack, forcing volunteer editors to monitor the page constantly throughout this day of remembrance.
His bio and a page tracking the history of edits and vandalism.
Bonus link to Short discussion of the problem.