That’s correct, (yes, I am agreeing with you), however, it works both ways...if you post in an “open” forum, it’s “open” to interpretation and “open” to responses.
You sound like the media. You claim free speech when you can be heard and when it benefits you. As soon as the opposition decides to show up questioning your motives, you claim sensorship and become the victim. Yes, you may post whatever sentiment you want.
...but I also can post and respond however I want. That is after all how an open forum works! ;-)