BIGOT noun [1]

a person who strongly and unfairly dislikes other people, ideas, etc. : a bigoted person; especially : a person who hates or refuses to accept the members of a particular group (such as a racial or religious group)

Full Definition of BIGOT

a person who is obstinately or intolerantly devoted to his or her own opinions and prejudices; especially :  one who regards or treats the members of a group (as a racial or ethnic group) with hatred and intolerance

[1] http://www.merriam-webster.com/dictionary/bigot