There are different types of discrimination. Some are common and some aren't. Under the category of employment discrimination, there is a type of discrimination called national-origin and race discrimination. There was a recent case that occurred at St. Cloud University, here in Minnesota, that has attracted attention. A Nigerian professor at the university, who is also a member of the Igbo tribe in Nigeria, believes that his salary is lower than that of other Nigerians at the university who are members of the Yoruba tribe. One of the members of the university's hiring committee is also a member of the Yoruba tribe in Nigeria. It is believed that the Nigerian hiring committee member may have been instrumental in helping his fellow tribe members to be hired at the university at a higher salary.