Translation of Überbevölkerung

Although I put my wallet in the front pocket of my pants it was not there. I had been so diverted by the aggressiveness of these kids that I did not feel it when they grabbed it out of my pocket.
While time is a great healer, it is very difficult and not necessarily advisable for a country to forget its past, therefore history always keeps the tensions to others alive. I will explain.
We then went out to have a drink at a bar near the hotel. There were mostly foreigners at the bar. All in all, we had the impression that there were many Westerners living in the city which gave this mix.