A Hamas member was killed in a clash with a family in Gaza and six were injured. Palpress reports that it is the Daghmoush family which supposedly kidnapped Alan Johnston and that there were reports of two dead, but for now I'll only count Ma'an's one.
Palpress also reports on an Islamic Jihad print shop that was closed by Hamas.
Interestingly, one of the commenters on that page announced another Fatah rally at the Tomb of the Unknown Terrorist in Gaza on Frfiday, where the Fatah rally on Monday resulted in Hamas beating the demonstrators and confiscating cameras.
Our PalArab self-death count is at 505.
UPDATE: Maan and YNet confirm Palpress' report of two killed. 506.