I'm German and I have plenty of Viet friends. This is what I find. Vietnamese can be the nicest people you have ever met in your life, and at the same time they can be the most dangerous people you have ever encountered. If you are nice to them, they will treat you like family and offer you with all they've got. If you are a bully to them, they will deal with you in private. I find that Vietnamese don't like reporting matters to the authority, or ask for external supports, they tend to take matters in their own hands. And they are an intelligent breed of people. Pleasant, peaceful, intelligent and have a strong sense of reality. They are bad-ass drinkers as well!
To those who take a liking in insulting other people on the internet, that's cheap! Why don't you do that to their face, as one man to another?
if a Vietnamese find out you talk shit behind their back, they'd stab you behind your back, with knife, literally!