The "deep fake" porn is going to be a challenge. People will make porn films with public figures that are so convincing, they look indistinguishable from the real thing.
Or they'll make deep fakes of public figures saying horribly offensive comments or committing offensive, embarrassing acts.
And, again, it's all going to look authentic.
We're not going to know what's real and what isn't.
And the people who oppose those public figures will SWEAR that the deep fakes are real.
I’ve seen movies made all-cgi, including “actors.” They look and sound fake.
In the LOTR/Hobbit trilogy, the real characters were easily distinguishable from the CG.