Dependence on bigotry
Bigoted people

Discrimination is the act of making distinctions between people based on the groups, classes, or other categories to which they belong or are perceived to belong. People may be discriminated on the basis of race, gender, age, religion, disability, or sexual orientation, as well as other categories. Discrimination especially occurs when individuals or groups are unfairly treated in a way which is worse than other people are treated, on the basis of their actual or perceived membership in certain groups or social categories. It involves restricting members of one group from opportunities or privileges that are available to members of another group.

Discriminatory traditions, policies, ideas, practices and laws exist in many countries and institutions in all parts of the world, including territories where discrimination is generally looked down upon. In some places, attempts such as quotas have been used to benefit those who are believed to be current or past victims of discrimination. These attempts have often been met with controversy, and have sometimes been called reverse discrimination.

Source: Wikipedia

Religious bigotry has been evidenced throughout history; Jews have often been the target. Political bigotry exists most commonly under totalitarian regimes headed by people with extremist positions. Class bigotry, in addition to the obvious caste system, is often discernible in labour - management conflicts and in the attitude of one national group to another.
Bigotry is an intolerant, obstinate, and unthinking attachment to one's views, party, or religion. It is heedless of truth, flouts the obligation to treat one's fellow man with sympathy and love, and is highly disruptive of social unity. Bigotry involves powerful emotions, thus is easy to incite. It stems from various causes, often begun at home, developed in school, and maintained by the media and governmental laws.
(C) Cross-sectoral problems