Of couse racial differences still exist. It doesn't mean that white people are a different species from black people, it just means there are a few, very minor, biological differences between different races. It is not coincidence that Jewish people have large noses nowadays, it is clearly a genetic trait. It is pointless to deny that such traits exist.

Of course, it is even more ridiculous to claim that these genetic traits have any significant affects on a person's character or intelligence. Racism as we have known it in past centuries should not be tolerated at all, but we should allow scientists to accept that by observing the genetic differences of racial groups they can disover why some are so vulnerable to certain diseases (eg Black/Hamitic/whatever sub-division being more susceptible to the AIDS virus), and save lives trough comparing their DNA to that of other ethnic groups.

Also I think the talk of all Jewish states being intolerant is a little harsh. The Khazar Khanate was a Jewish state in which there were many Orthodox Christians and Muslims. And that was around 700 AD.

From a Christian perspective, the extent of anti-Semitism (as in anti-Jews/Judaism, not all Semitic peoples eg Arabs that the term suggests) is hard to logically explain without looking into Biblical prophecy. Especially considering how rapidly attitudes towards Jews within Europe could fluctuate (look back to Japtheh in Shem's tent). On the one hand the Popes of the early middle-ages issued Jews with badges stating they were Jewish (so Hitler or the Baghdad Caliph's weren't the first to do this), although unlike in the two cases in the brackets this was for their own protection, with the Pope respecting their position as God's chosen people. But then attitudes changed so quickly with Jews being persectued as the murderer's of Christ and being kicked out of Spain in 1492 and in other European states shortly after. It was not until the growth of the reformed churches that scripture was again respected on the matter of the Jews - one example being Cromwell allowing Jews to return to England for the first time since the 13th Century, but they were promptly expelled by the Anglican (openly Anglican, Catholic really) monarchs that succeeded him.

Just my