Hinduism: prejudice and discrimination
People sometimes say that discrimination is created when prejudice is combined with power. Prejudice is the attitude of someone whose opinion is not based on fact. Prejudice can be triggered by differences of religion, race, colour, sex, language, disability or age. Prejudice is not illegal, as an attitude can't be illegal, but discrimination is illegal.
All forms of discrimination go against the first two Articles of the United Nations Declaration of Human Rights:
Article 1 All human beings are born free and equal in dignity and rights. They are endowed with reason and conscience and should act towards one another in a spirit of brotherhood.
Article 2 Everyone is entitled to all the rights and freedoms set forth in this Declaration, without distinction of any kind, such as race, colour, sex, language, religion, political or other opinion, national or social origin, property, birth or other status.