The beautiful thing about censorship, is, it's hard to detect, because those censored must find side channels to announce they've been harmed. The private companies doing the censoring don't publish stats. Your advice, so far, is quite similar to "start your own social network." Do you have anything actionable I can use to make the world a better place?
You state that the number of people suffering from censorship is at an all time high. Presumably you have a number to back that up? If so, you can express that as a percentage of the relevant population(s) instead.
As for something even more constructive...
Perhaps you could promote the use of TOR and other privacy and censorship circumvention tools.