The lack of respect and caring for other people that Dominicans have. For example, cutting in lines (which I don't allow) and stopping in the middle of the street, blocking it so traffic can't pass, just to talk to somebody or get out and get something from a Colmado. This is what bothers me most, the fact that no one thinks of, or cares, about the other.
That's one of the reasons they cause so many problems when moving to other countries.