Depends how objectively it is imoral. If it is a critique to anything that someone else is doing and this person can change it (as speaking or acting for most people are free acts, that have the source in your conciousnes and you can change it if you want) there should be no legitimation in silencing this critique. Since it would hinder improvement.

When a critique goes to unchangable things, like color of skin, sexual orientation or your origin, I think these are very weak attacks and should be clearly isolated by other users (morally, not legaly) but should only be banned, it hurts the personal rights of someone. Like if you would post my address, real name and phonenumber, this would go against my rights and I would try to make this post disappear with leagal measures. And hopefully most hosters would comply. 

 On personal level, I would also ban shit I dont like on my property. But you believe that the (un)-justice system of the corrupt state could save your rights? 

 Yes in most cases I think the justice system does a great job in securing my rights. 

 You are joking, right? 

 Nope I beleave this. You live in Switzerland too, or you know for whatever reason, how trustworthy the judical system in switzerland is? 

 No, I dont live in switzerland. But I dont trust any governmental Institution. 

 I think this is your personal decision on whom to trust. But in which manner does it help you to generally distrust? 

 You mean, in which manner does it help to generally distrust warlords, pedophiles and robbers? 

 No in which manners it does help you to distrust any government? Democratic governments are mostly driven by many people. And the most powerful are elected by the people. So I think there are defnitly some I do not trust personally. But the whole government I do not distrust because there are some untrustworthy. Since they need to orient their behavior on the opinions of the people. If not, they will not serve the next governance term. So I beleave that the government of a country always represents more or leaa its society. So problems in government do actually have their seeds in society.

This is like this, since governments are based and legitimized in society. Society is not legitimized by government and does not need to be.