Actually, you have no rights to free speech on this forum. This is a privately-owned forum, part of a privately-owned website. What is published here is at the discretion of the site owners.
They have a set of rules on acceptable posting. Most of us have fallen foul of these rules at some time or other, I once had a post on a fox-hunting thread edited because I included a graphic photograph of a dead fox. I put it on, thinking it would be quite likely to be edited, I was pushing the boundary a bit. It's a "family-friendly" site, people don't expect that kind of stuff on a DIY site.
However, I find it hard to believe that you HONESTLY think it is acceptable to start half a dozen threads about why you hate muslims. I find it even harder to believe that you think these threads should stay open! I'm all in favour of free speech, but you need to find yourself a suitable medium.
Have you considered Speakers' Corner? I'm serious, if you want to be able to spout off at an audience about anything you want to, head to the north-eastern corner of Hyde Park on a Sunday morning and just start talking. It is only across the road from one end of Edgware Road, and I warn you that there is a rather sizable muslim community on Edgware Road, but if you really have conviction in your ideas, THAT is the place to prove it.
But beforehand, I ask that you take a stroll up Edgware Road and eat at one of the many fine Arabic restaurants, or have a haircut at one of the absolutely rubbish barbers (seriously, don't go there!), and meet some of these people you seem to believe are the devil's own. You might just decide not to go ahead with your speech. But if you do, at least you will have experience on your side.