In the mid-19th century, a strong nativism sentiment was also against Catholics, as a number of immigrants were from countries with strong Roman Catholic backgrounds. Nativism flourished in the U.S. during the 20th century after the country became home for thousands of immigrants. As a result of nativism, groups were formed to protest the rights of immigrants. Examples of these groups include the Know-Nothing Party in the 1840s, as well as the Klu Klux Klan. There
