You need to be very careful in a lot of countries, do or say the wrong thing at the wrong time can cause you a lot of problems. We can say anything about our government or religion with no consequences, do that in many countries and will get you arrested.
On one trip I was crossing the border between 2 African countries, there were 4 rowdy South Africans in front of us, the customs officer asked them to remove their hats in front of the Presidents photograph. They declined laughing, the 4 bored police instantly woke up and arrested them, I'm not sure how much in finebribes they paid, quite likely $500.