To add to Alan's point: When I was working overseas, I used to tell the new arriviing foreignors much the same thing I just said to you, but in reference to the country we happened to be in. For some very spcifically that, "If the urge comes over you to tell the people here how to run their country, put your lips in firm contact with each other until the urge passes." Generally people know quite well what needs doing in their own country and what and is being done and you have no idea of their daily realities or what is being done why and where. You are there as an invited (or maybe even uninvited) guest. Act like one.