Palestinians and Jews may be bitter enemies, but according to Tsvi Misinai this shouldn't be the case because Palestianians are actually long-lost Jews.
The Times summarizes the gist of the theory (which isn't original to Misinai):
Palestinians with whom Israel is at war are, in fact, descendants of Jews who stayed on the land when the Roman legions sent most of their countrymen into exile 2,000 years ago... Gradually, these people lost their ethnic identities, converting first to Christianity under Byzantine rule and then to Islam, as power in the land changed hands and rulers sought to homogenise the population, either through force or the offer of social privilege and tax incentives.
Apparently there are closer genetic matches between Palestinian and Jewish communities than between Palestinians and surrounding Arab communities. So who knows, the guy may be right. But even if he is, it probably won't make any difference to the fighting over there.
The theory, argued by Prof. Ferenc Szasz of the University of New Mexico, is that modern rap music derives from the ancient Caledonian art of "flyting", in which rival poets hurled obscene rhyming insults at each other. From the
Telegraph:
Scottish slave owners took the tradition with them to the United States, where it was adopted and developed by slaves, emerging many years later as rap. Professor Szasz is convinced there is a clear link between this tradition for settling scores in Scotland and rap battles, which were famously portrayed in Eminem's 2002 movie 8 Mile.
The more conventional theory is that the roots of rap music trace back to ancient West African poets called "griots". From
Wikipedia:
the griots of West Africa were delivering stories rhythmically, over drums and sparse instrumentation. Because of the time that has passed since the griots of old, the connections between rap and the African griots are widely established, but not clear-cut. However, such connections have been acknowledged by rappers, modern day "griots", spoken word artists, mainstream news sources, and academics.
Actually, given the big gap in time between these two possible origins and the emergence of rap in the 1970s, both theories sound a little iffy to me.