The Roman Catholic Church teaches that Saint Augustine was from Thagaste in Africa and that Saint Augustine was, by today's racially-charged language, Black.
Saint Augustine confesses in many of his homilies that he was a sexually-charged youth espousing socially deleterious political philosophies before his conversion; what mattered was not skin tone but scholastic achievement and adherence to the then-current, fanciful, anti-Catholic, political philosophies in Rome. Augustine also was noted for the difference in his skin coloration (Black) by his Roman peers with whom he was openly, fiercely promiscuous and with whom he was strongly part of that day's youthful student intelligentsia.
Augustine's skin color was a problem for some in Europe; the problem was that he did not blend with the hoi polloi in the locale and was even ridiculed and stigmatized for his darker skin by some residents where he studied. Augustine paid no attention to the ethnocentric racism he experienced as a student during those Roman times because his sexual drive eclipsed the paltry arguments for a comfortable phenotypical blend among the general population. Augustine's darker skin coloration became a scapegoat problem when authorities discovered that he molested a young girl who later became pregnant with their child.
At this time, his mother, Monica was known to have prayed for twenty years for her son, Augustine, who she loved very much, that he may be converted from his excessive hedonism and his repugnant political philosophies. As she died, Augustine converted back to Catholicism. The girl who Augustine molested became a nun; their child became a religious as well.
Augustine refers to himself many times being African with dark skin in his homilies as bishop. On the current understanding of Augustine, much has been ascertained that Augustine was Black (by the racially-charged vernacular of today). The term, "Black" is an Anglicized expression of the Portuguese-Spanish term, "Negro."
Moreover, the Roman Catholic Church already had two Black African popes who were later sainted, so understanding that Augustine was "Black" was not hard to fathom as he was from Africa as well. But for sure, Augustine gave his own accounts, making his own testimony as a primary source, that he was an African with way way darker skin than most European Romans. As some spinmeisters try to Whitewash Augustine in order to align his stellar philosophies with a European phenotype, Augustine gives first-hand accounts dealing with nebulous racism, again, during his younger, much more wilder, days. Thagaste today is still "Black". While not everyone in Africa is "Black," the Muslim conquest in the early centuries circa 7 AD were predominantly at the hands of black West Africans who adopted the Islamic faith and spread it across three African empires.
Bottom line, any argument for Berber-ethnicity may be more European aspirational than actual: Augustine of Hippo was Black. God does not see color, so "race" does not matter in Christendom-- only love of God and of neighbor matter as Jesus welcomes the sheep into the home of His Father for their LOVE not their hospitality toward a preferred race. #AugustineIsBlack