@bullivant I don't know how facebook or anybody could do something about it, while also not doing something about actual fiction which is false 100%.
I believe a better solution would be to have a "Fact Checking" lessons in school curriculum. Where you are given a laptop ( which schools already have plenty of ), a post of some kind. And you need to find out if it is true to false. By going to the internet and investigating.
That even could be a fun lesson for the kids.