Translation of inmoralidad

I understood that this was a real problem in this country and many foreigners came for sex tourism. Many bad stories had happened but my hosts were decent people. I could tell that right away.
Once they see a foreign person, their primitive thoughts come up and they start to hate and dislike without any actual reason. Whose fault is this hate? Is the fault of the ones who are afraid.
We managed to get a few hours of bad sleep and arrived at the destination called Lao Cai, the capital of the province with the same name. It was only 370km from Hanoi, but the ride lasted nine hours.