Don't be naive. WE ARE NOT ALL THE SAME!

Ugly people are not the same as good looking people and are usually treated by society accordingly.

Women are not the same as men, and good looking women often get more polite treatment (usually from men).

The biggest discriminator of all: Poor people are not the same as people with money. If you have money, most people want to be your friend. If you are poor, most people wish you would just go away.