What sticker can you remove from a hockey helmet?

http://hockeyus.com/news-articles/hockey-guides/what-sticker-can-remove-from-a-hockey-helmet.html In short keep both stickers on if you are planing to play in the USA and Canada. If yo do not have an appropriate sticker for the appropriate country, you may be ejected from the game. If you know any rule for the European Union or/and any other country just post it in the comments below.