Let me help clear it up for you 
This is an entertainment site, and it is not owned by a government. It has terms and conditions. You agreed to adhere to these terms and conditions when you made your account. Some of these terms are based on German law, as Bytro (the makers and owners of the game) is a German based company. One example of this condition is that glorification of national socialism or its leaders is strictly prohibited in game, chat, and forum. Other terms are made by the company themselves, to provide an enjoyable gaming experience.
If that doesnt make sense to you, lets address the issue of Freedom of Speech. Freedom of Speech doesnt give free license to just say whatever you want. For example, you are not allowed to scream "Fire!" in a movie theater, you are not allowed to scream obscenities at a child, and you are not allowed to tell your airline steward you are carrying a bomb.
If you do not wish to abide by the terms of service (ToS) you agreed to when you made your account, feel free to delete your game and forum accounts, and find something that better suits your tastes.
The following links will educate you as to what you agreed to when you made your game and forum account, and what the chat rules entail. Thank you for your cooperation.
