Islam is the religion of equality. And Saudi Arabia is the spiritual home of Islam. So Saudis are the major proponents of equality? Well not exactly.
I'll try to spell out the hierarchy.
1. The original tribes related to the House of Saud. They are trusted to be loyal, and so get all the jobs in the Armed Forces, Police, Airport security etc. You can spot them a mile away, they all have the same thin physique and rat-like faces.
2. Original tribes, but not related to the House of Saud. Usually do well in society, but are not trusted by the Royals.
3. Non-tribal Saudis - the so-called "110 volts". However they are still Arabs racially. OK as minor civil servants or shopkeepers.
4. Semi- and non-Arab Saudis, usually came here on pilgrimage several generations ago and stayed. Usually look "different", e.g. Eastern or Negro. Black Saudis are the ideal "fashion accessory", they are the most popular and best-paid drivers for richer families.
5. Westerners, respected for their professional skills and work ethic. However they are UNBELIEVERS.
6. Other Arabs. Seen as being good at sales jobs, but are looked down on, because they come from poorer countries.
7. Other Muslims. Pakistanis, Indians, Sri Lankans. Only good for the menial jobs that we are too proud to do e.g. building, cleaning, factory work.
8. Indonesian housemaids. Lowest of the low. Come here out of abject poverty. Saudi wives can vent their anger on them and beat them up. Saudi Husbands can sometimes rape them, then throw them out when they get pregnant. Saudi children learn their racial attitudes by watching the way their parents treat the Indonesian housemaid.
Me? I'm category 2. And no, I don't rape the housemaid. She's Filipino and lives here with her husband who is our driver. I like to think that we treat them well, but then my wife and I have benefitted from living in the West.
For a view of the real Saudi Arabia visit The Religious Policeman