Why were new immigrants attacked and mistreated in the early 1900s?

New immigrants in the early 1900s faced attacks and mistreatment largely due to nativism, a belief that prioritized the interests of native-born citizens over those of immigrants. Economic competition, particularly during periods of economic downturn, fueled resentment as many native-born workers viewed immigrants as threats to job availability and wages. Additionally, cultural differences and xenophobic attitudes contributed to widespread discrimination, leading to violence and social exclusion against immigrant communities.