Language rules basically equal stripping me of a right to free speech. Also a 72 hour punishment is fairly harsh imo, I lose ~10% of my playtime out of this month because someone didn’t like what I said? (Which is even worse for me since I use cash shop) There should really be a warning before 72 hour ban, as the GM obviously loves using the ban hammer. (I assume one of my slurs offended him)
Your “right to free speech” ensures that the United States government will not attempt to silence you. The “right to free speech” does not exist outside of governmental interference, and does not exist on a private game server. Information for you: http://en.wikipedia.org/wiki/Freedom_of_speech
Your warning is in the User Agreement you sign (and re-sign from time to time) as well as the Rules of Conduct, the Naming Policy, and is all explained clearly in the Conduct Breaches and Outcomes. Find these documents here: https://www.guildwars2.com/en/legal/
