Halruaal is arguably racially divided country. Humans make up the majority of the Magisterium and have taken control from the many natives that existed prior to the Magisterium's rule. Chief among those that are discriminated against are the Elves. When the First Noble Houses arrived, a devastating war took place for fifty years. At the end, many of the elves were enslaved and their culture shattered. Even now, after House Udaku forced the liberation of elves, they are treated as second class citizens by many of the regional powers.
If there is a particular race that is not listed here that you wish to play, talk with your DM.