Any help or tips on what to do if someone with power is abusing that power

When someone has the ability to silence another person, but lie about the reason they silenced the person

Is there anyone out there that could have more power to reverse such a thing

It is a very difficult situation, because they can delete something, lie about why it was deleted, and they just get away with it

And if this is brought up, they just delete it again, it seems like this type of system is inherently corrupt and designed for those with these powers to abuse it and get away with it

they have the support of others around them that do the same thing

I just don't know what to do, isn't this corruption and abuse of power?