BEIRUT — Gunfire erupted Sunday during a Hamas-organized funeral in a tense Palestinian refugee camp, leaving at least two people dead and seven injured, officials said. Lebanon’s National News Agency said the gunfire was sparked by an altercation during the funeral.... NNA had also reported an explosion in a Hamas arms warehouse in the camp, saying a number were killed and injured. Advertisement Sunday’s funeral for Hamza Chahine drew scores of mourners.... He said one of the injured is in cr