Yes, assuming that your neighbors are up to no good solely based on their ethnicity or nationality, in this case, being Irish, is a form of prejudice and stereotype, not to mention it can be considered as a manifestation of xenophobia or racism. It's crucial to recognize that people's behavior and character are not determined by their nationality or ethnicity.
Judging or making assumptions about someone based on their background is unfair and can perpetuate harmful stereotypes. Individuals from all backgrounds are diverse and unique, and it is essential to treat everyone as individuals, rather than making broad generalizations.
If you have concerns about your neighbors' behavior, it is essential to focus on specific actions or observable behaviors that raise concerns, rather than attributing those concerns to their nationality or ethnicity. Engaging in open and respectful communication with your neighbors can help build understanding and possibly address any valid concerns you might have.
It's essential to challenge and overcome any prejudices or biases we may hold, as promoting inclusivity and embracing diversity enriches our communities and fosters a more tolerant and respectful society.