Translation of watchdog in German

There are about fifty families who are having very tight connections. Too tight in my opinion. It's like a small town in this aspect. Joanna though is very satisfied with the place and the atmosphere.
But we need to asked ourselves why we actually are built in such a way that we so easily dislike others and build stereotypes. What leads to such behavior even in well educated individuals?
At the bottom a Jeep waited for us and it was only a fifteen minute drive uphill to get back to the village. We explored the village and went to have a coffee at some nice place around the center.