It is undeniable that many people in North Africa, such as alleged terrorist Zacarias Moussaoui of Moroccan descent, have enough black African ancestry to be considered "Black" in the United States.
However, others have argued that at least in the Middle East (e.g. Jordan, Syria, Lebanon, etc.), most Arabs (who are not Indo-European) can be more closely related to Persians – and vice versa – due to both the ancient slave trade and the wars that involved Macedonian, Byzantine, Roman, Holy Roman, Persian and other empires.
There can be as much difference between two ethnicities grouped into a single "race" as there can be between ethnicities grouped (often arbitrarily) into an another "race". A very good example of this type of "arbitrary classifaction" include the Persians and Arabs, which - according to the Bible as well as the Quran - make up two separate and distinct racial groups (not ethnic groups).
Persians have no problem with arabs. But due to anti-arab propoganda in US, Persians are associated with Arabs to undermine the social status of Persians in US. Persia had no history of Slavery. And Persians are not Arabs and they are two different ethnic groups and it is not arbitary to divide Arabs and Persians into two different groups. Also note what Wikepedia states are not random statements and they have an editorial board which carefully approves what they will display as their knowledge base. Wikepedia statements are consistent with Hollywood and the rest of US mass media. The whole line on Persians is very consistent. Also there are powerful groups in US who finance DNA "research" in the middle east trying to prove that Persians are racially linked to semitic arabs and africans and delinking Persians from their European heritage. This is done mostly by choosing the DNA "samples" from a pre-approved group of people who might prove what they wanted to prove.
The fall of the Persian Empire marks the end of the great majority White civilizations in the Near East. By this time virtually all of the settlements in the greater region had lost whatever racial homogeneity they once had, and were to larger or smaller degrees societies comprised of a plethora of mixed races, producing the wide and varied physiognomy visible to this day in the region - a mix of Semitic and original White stock.From the time of the fall of the Persian Empire however, the near East ceased to be an area which was majority occupied by peoples who could claim to be White in the original racial sense of the word. Nonetheless, to this day there remain significant Indo-European genetic throwbacks amongst the Persians, today called the Iranians, as is the case throughout the entire Near and Middle East, from India, Afghanistan, Iraq, Iran, Syria, Lebanon, and even amongst the Palestinians. The modern day word for Persia - Iran - is derived from their ancient racial roots, the Aryans (as is the case with Iraq and also the very word India).
Persia was overrun by the Arabic Muslims in 651 AD, and through the integration which followed the last major traces of the pure Indo-European peoples in the Middle East was diluted.
Indeed, much of what later became known as Muslim culture, architecture, writing and other skills, were taken from the Persians into the broad Semitic speaking world.
Notes: The key point in this article is mixing up Persians with Iranians According to these poeple Iranians live as far as Palestine!! Also note how these "champions of human right and minority rights" respect people depending only on how you look like.