Yes I do. Because that is how order is maintained in any functional community, whether that be online or irl.
There is a difference between refusing anyone the option of their own view because you don't like it and ensuring that an environment is safe for others to speak by way of setting down rules. For example, we have laws in most, if not all, countries. Does this restrict choice? Absolutely. Is it necessary? Absolutely.
When it comes to forums, people have choice all the time. They can choose to stay or go. They can choose to be respectful or not. They can choose to break rules or keep them. What they cannot whine about is the consequences after being clearly informed about what they will be.
Abuse of power is never good, but determining what is actually an abuse or just a case of the "I don't like that's" is important too.