Religion deals with Human Beings and Human Being has both good and Evil. Problem with the readers and interpreters , problem is not in the book or sayings.

I really appreciate that you have spend some time observing people ( I am not sure how many , may be your communication circle and you jumped into conclusion so easily though), following are the two answers which are my thoughts

For your first point :

In my opinion "Treating someone bad with no particular reason is the absence of religion, we have been told that there is no difference between an Arab and Non_arab"