Your idea of free speech is a brigade of mentally ill people publicizing their hate towards helpless, uneducated people. I did not know you appreciate gibberish coming out of the mouths of chimpanzees-- what you lexically term, "free speech."
In free speech, everybody can say the opinion including you, me or anyone else. Of course people won't agree with the opinions, but the idea of /pol/ is to have discussion. If everybody has the same opinion it's not a forum 
It appears you are not used to hearing others opinions. Where are you from?