It's not just individual conditions like upbringing, poverty or education. There is a problem with segregation. Not any form of mandated segregation, but emerge

It's not just individual conditions like upbringing, poverty or education. There is a problem with segregation. Not any form of mandated segregation, but emergent segregation due to social constructs. Racism, latent or otherwise, makes minorities feel more comfortable with people of their own ethnicity. Whilst that same racism makes the majority want to move away from the minority. Obviously, this segregation isn't the only issue. There are more minorities that appear to have self-segregated than just the Arabic/Muslim. In the UK, e.g. Indians, Eastern-Europeans, perhaps black people. Those minorities seem to have a lot fewer terrorists, if any.