It's as a consequence of the existance of free, open and inclusive societies and the fact that their existance has been defended at enormous mind boggling catastrophic cost in terms of human suffering and loss.
Where is your post? Is it magically sitting on some cloud somewhere labelled "The Free to Post Anything You Like Internet"?
It's sitting on some server somewhere in, yes, America.
Do you get that? Your declared right to post anti-American crap is only upheld because America provides you the freedom to do so?