constitutions (the one in the US for example) explicitly
guarantees every citizens right to free speech. Most countries also
have laws that makes saying and publishing certain things illegal. In
most countries with "free speech," you are allowed to put "almost any
poster you want on your front door." Similarly, Wikipedia allows you
to put almost any description of yourself you want on your user page.
Quite the contrary, it is important to emphasize that there is no
protection for offensiveness for anyone.
I don't know what you do for a living, but suppose you have an office
at work. Do you get to put "almost any poster you want" on the front
door of your office? Not at any workplace I've ever known of.
This has been gone over before.
Wikipedia is not a workplace and it is not workplace safe
Wikipedia may be offensive to you
Look in the mailing list archives for answers why Wikipedia must be
like the two statements above for it to operate.