Why are specific videos/movies/clips etc banned in some countries and not others?

Some countries are very religious.. and some videos and movies may have content in which the gov’s may think it insults or critisizes their culture or religion… in some cases a gcountry’s gov. may ban a movie or clip due to an event that happened in the countries’s history…. i.e. it was prohibited for a little bit to watch videos that had content of hitler and his intentions after WWll.

Because sometimes it has not come out in one country and it has come out in onother country, if people from like france for example post a new music video from fall out boy because they made it there first and it’s soppost to come out in the united states in a latter day. They don’t want you to give plubisity to what they are not being payed for yet. Idk if i made myself clear but yeah.