Complex sentence: In reality, this perceived difference did not exist; the new immigrants although looking different brought the same sort of values as old ones did, and statistically, they did not commit any more crime or contribute to any more of the misfortunes as anyone else did.
Split into simpler sentences: In reality, this perceived difference did not exist; the new immigrants although looking different brought the same sort of values as old ones did. Statistically, they did not commit any more crime or contribute to any more of the misfortunes as anyone else did.