Wikipedia: “Bigotry is the state of mind or attitude of a bigot, defined by Merriam-Webster as “a person 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] Bigotry may be based on real or perceived characteristics, including age, disability, dissension from popular opinions, economic status, ethnicity, gender identity, language, nationality, personal habits, personal feelings, political alignment, race, region, culture, religious or spiritual belief, sex, species, or sexual orientation”.
In my experience, the people who constantly use “bigot” to describe others, easily qualify for the label themselves.