I suppose if Jews had a history of genocide against Christians continuing to the present day your blame for Christ's death would be appropriate. But even Christ's death was not a genocide or mass murder of another race or religion. You are failing to see the historical continuity of Arab culture, and as the old saw goes -- those who ignore history are doomed to repeat it.
"We need a statute of limitations on racial/ethnic/religious blame. I propose the point when nobody in either group remains alive."
So by the year 2010 or so Stalin's and Nazi crimes should be forgotten? I reject that under the statement above.
Further since those crimes continue today and IMO are part of a pattern that has not been abandoned, it would be foolish to ignore the past which bears striking resemblance to the present.
Islamists themselves look longingly back to the Seventh Century of their glory and domination. They believe their old tools of lying to deceive a trusting humane world (Takiyah) are valid and useful today. They are unwilling to forget the past but we blindly and foolishly should? No.
You sound like an apologist for their crimes. So what about their current actions, do you excuse them too?
I don't propose we forget Stalin's or Hitler's crimes, or for that matter the involvement of Jews in Christ's death. I just don't see how blaming members of these groups today serves any useful purpose.
I'm no apologist for Muslims. I just think it is ludicrous to discuss the Arab invasion of Egypt way over a thousand years ago in one sentence and in the next sentence cover the ongoing genocide in Darfur as if the two are intimately connected.
Historical questions are interesting, but should be discussed in a historical context, otherwise you wind up like OBL obsessing about Andalusia or the IRA going on about Cromwell.