The fact that people like you see the problem as only contingent upon a religious belief means that no solution is in sight.
What did his extrajudicial assassination accomplish. He was a man responsible for the building of schools and hospitals in Gaza and the whole world, to include the USA, condemned Israel.
And let us not forget that Israel created HAMAS for the sole purpose of marginalizing the PA and weaken their influence in peace negotiations. I am reminded of the words of Patrick Pearse as he eulogized Jerimiah O'Donovan Rossa...words that may hold the same truth for the people of Palestine and the Jewish State.
"Our foes are strong and wise and wary; but, strong and wise and wary as they are, they cannot undo the miracles of God Who ripens in the hearts of young men the seeds sown by the young men of a former generation. And the seeds sown by the young men of '65 and '67 are coming to their miraculous ripening today. Rulers and Defenders of the Realm had need to be wary if they would guard against such processes.
Life springs from death; and from the graves of patriot men and women spring living nations. The Defenders of this Realm have worked well in secret and in the open. They think that they have pacified Ireland. They think that they have purchased half of us and intimidated the other half. They think that they have foreseen everything, think that they have provided against everything; but, the fools, the fools, the fools! They have left us our Fenian dead, and while Ireland holds these graves, Ireland unfree shall never be at peace."
Patrick Pearse - Wikiquote
But you tell me, as you wish to bring religion into it. I was raised a Catholic and we do try to not treat anothers death as something humorous. Is that the regular act of Christians. Personally, I have no problem, as I have said, giving back as I get.
What is a "MFSOB".