Are you the person to decide what is acceptable, what is not acceptable, who the 'Sick and Deparved' are? As an experiment perhaps you could nominate someone on the forunms who you trust enough to filter out every message you are not allowed to see. Do you think that person exists, is that what you would want.
If not, then why are you advocating censorship to what the rest of us are allowed to hear, because freedom of speech isn't just about allowing people to say things, it's about allowing people to hear things. If you don't allow people to say things you find ridiculous how do you challenge yourself to best respond to them, how do you know people with these views exisit and work out how to deal with them?