@Foofie,
I think the real truth here is that all human beings are tribal. Most of the identifiable ethnic or religious groups alive today have at one time or another been both perpetrator and victim of discrimination and such tribal preferences. That goes for Jews as well as Catholics and Protestants.I think there is a potentially significant difference among Moslems in that they have never disavowed the rationalizations for brutal intolerance in their theology. The fact is that at many times and places in their history Moslems have been more tolerant than Christians and Jews, but they are more the exception than the rule. There appear to be no doctrinal prohibitions or limitations on what can be done to suppress or force the conversion of unbelievers as exist in most other religions.
I've spent a good deal of time in Israel and we both know that Palestinians, both citizens of Israel and residents of the former West Bank territories, get a pretty bad social and economic deal in Israel. True it is a good deal better than what Jews would get in Gaza or the West Bank without the active protection of their government, but that isn't an acceptable standard in the modern world. The Christian population of Palestine has almost been wiped out.
Tolerance throughout the Middle East was a good deal better in the Ottoman Era than it has been since the British, French and Russians brought down the Empire in 1918. Oddly they all appear to have succumbed to rather complete forgetfulness of their roles in the continuing crises. and appear to think that history has absolved them for their misdeeds.
With respect to the American melting pot, I don't think we have "wiped out all distinctions" as you put it. I'm not sure that is even desirable. Some such variety adds a great deal to the cultural life of our cities and the country as a whole. Overall I think it is indeed accurate to note that overall we have done a good deal better in this area, with very large numbers of immigrants, than has any other country I know of. Brasil, Canada, and lately Australia are doing well in this area also, but I think by more or less the same process that has existed here. (i.e. no process at all, just economic freedom and the tolerance required to allow newcomers to build their own social structures as they adapt to the whole).Conversely the French "process " of adopting the supposed tramsendental values of French culture hasn't worked very well at all.
We both know that Jews, in their religious and social beliefs, are every bit as diverse and mutually disagreeable as Christians. Over the last century they have had the unifying benefit of serious common enemies, but without that will they do any better staying together and keeping the faith than Christians? I doubt it. The hardest thing to deal with is success and acceptance.
We all share the same common human nature.
Some more from the Bard, Fitzgerald;
Into this Universe, and why not knowing,
Nor whence, like Water willy-nilly flowing:
And out of it, as Wind along the Waste,
I know not whither, willy-nilly blowing.
What, without asking, hither hurried whence?
And, without asking, whither hurried hence!
Another and another Cup to drown
The Memory of this Impertinence!
And that inverted Bowl we call The Sky,
Whereunder crawling coop't we live and die,
Lift not thy hands to IT for help--for It
Rolls impotently on as Thou or I.