Think about the jokes you want to tell carefully before you say them. Humor can lighten the mood, but it is often taken at another’s expense. Many jokes degrade women, ethnicities and disabled people.
Learn another language, or be open to accepting that most countries have citizens who speak dozens, if not hundreds of languages. Promoting language education, rather than fighting it, can decrease discrimination based on ethnicity.
Fight gender stereotypes in the home. Thinking of things as “women’s work” or “man’s work” may lead to gender discrimination in the next generation. As more and more families become dual-income households, make sure both sexes are treated as partners.