Jumping the gun

Europe's NGO Jihad Against Israel

Am I missing something? Were the perpetrators of the Duma arson attack definitively identified? If not, why are some rabbis rushing to assign blame to Jews? One rabbi who wrote about the attack soon after it occurred has already written that he may have jumped the gun. Another rabbi has an article today that also assigns blame for the attack to Jews.
Until the police arrest the perpetrators, can we hold off on writing who is to blame for the attack?

A public interest law firm is threatening to bring lawsuits against more than 100 counties across the United States that appear to have more registered voters than living residents.
Read more: http://freebeacon.com/issues/election-group-141-u-s-counties-have-more-registered-voters-than-people/