Robert F. Kennedy Jr. filed a petition with the Supreme Court of Westchester County to order Daily Kos to disclose the true name of “Downeast Dem” — a blogger who libeled Kennedy on the Daily Kos platform last year. Justice Mary H. Smith ruled in Kennedy’s favor in April, ordering Daily Kos to unmask Kennedy’s incognito attacker. Downeast Dem has no immunity from libel laws. Moulitsas and Kos Media have until tomorrow, June 30, to respond to the subpoena.