Galatians 2:15 - Chosen bigots...?

"...'We by nature [are] Jews and not sinners out of Gentiles.'"

-Paul still speaking to Peter here, even though we have a new paragraph.  He states something to which Peter and every other Jew would readily assent.  

-God’s chosen people, these - and nobody else.  This was the prevailing sentiment among the Jewish people.  They were special, they were better, they were cleaner than any of the other peoples of the world, simply because God chose them.  They flew in God's first class.  God had chosen them out of all other nations to be His people, and nobody else.  These were the true sons and daughters of Abraham, a covenant ratified in perpetuity by observing the ritual of male circumcision on the 8th day and maintained by an endless series of blood sacrifices.  (Of course we know now that these sacrifices were meant to prepare the Jews to embrace and trust in the One Who would be the True once-and-for-all sacrifice to fully and finally and forever remove the guilt of their sins).  But God had chosen them, He had repeatedly blessed them and delivered them and spoken to them - even if their hearts were not fully given or surrendered to Him, they enjoyed special status as being clean in the eyes of the God of Abraham because they were descendants of Abraham.  They were pretty much born into a state of ‘spiritual purity’ (which of course bred a strong sense of spiritual hubris), and everybody else, all other nations, were... sinners.  Say it with disdain and disgust.  Filthy.  Dirty, rotten, morally bankrupt by virtue of their birth.  Strangers to the covenants and promises of God - their only hope of gaining some kind of acceptance with God was the Jewish way.  They needed to be circumcised and then begin to observe the Mosaic law as best they could, pilgrimage to Jerusalem, pray facing that holy city, alms in the temple (sounds a bit like the formula which Muhammed passed on to his followers).  Jewish spiritual bigotry and blindness ran so deep that the Jews had long since concluded that rather than bless the nations they needed instead to avoid any contact with non-Jews whatsoever, lest they become contaminated simply by being in their presence.  So contemptible were these that the Hebrew word for 'nation' (goy, plural goyim) became a pejorative for any Gentile.  Peter and all other good Jews had been steeped in this thinking from birth, it was part of the very core of their cultural identity.  Jews were the spiritual elite, and the Jewish way was simply better, way better.  This was the social current against which the Gospel was swimming from the get go, and this was what reared its ugly head in the assembly in Antioch.  Recall that almost all the opposition which Paul and the early church (and Jesus!) faced was from Jews, increasingly so as Gentiles were brought into the fold in increasing numbers.  It was going to take time and effort to get this massive ship turned in a different direction, even after repeated direct revelation from God Himself - in Whom there is no partiality whatsoever.

-Are there any attitudes of superiority or even any social/cultural preferences in my heart which keep me from embracing the least of these among my brethren?  Who do I tend to avoid when the church gathers?