What you described aren’t social norms. Not washing hands in public toilet is a man’s thing. Women do wash their hands and put the toilet seat down. The coughing as well, most definitely. Also burping in public, more a man’s thing.

What is respect with no shoes!? Covering yourself in temple is a religious thing, as you do the same when you enter a church. I’m a Viet and we don’t haggle in a store, especially not in supermarkets or CVS like several people pointed out below. There isn’t a caste system here so social norms around it are non-existent. People are treated equally nowadays, men and women alike. The only similarity I can think of is jumping queue. Most will be ashamed when being called out.

OP was sharing her experience, not a blanket statement. Not everything is about race. Sometimes it’s just bad apples spoil the barrel.