Fediverse

I was recently thinking about how amazing it is that with this decentralized community we would have no censorship from big corporations and then I asked myself: what about illegal content? The kind of content that really should not be shared? As an example, what if someone creates a Lemmy instance and starts creating a community around CP? Or human trafficking? How do we deal with it? I know that instances can choose with whom they can access the content, so if most popular instances blacklist that "illegal" instance its content wouldn't be easily visible, but it would still be in the Fediverse. Also, will all popular instances have to be quick to blacklist these "illegal" instances? Isn't that a little to difficult? If we go the other way, where they create a whitelist, wouldn't that harm small legit instances? Is there a plan to fight off illegal content?