Why would they post it on FB? Why would you click on the link?
Why go looking for trouble online? Let it come and find you.
If anything looks like torture porn online I try very hard not to click on it, the better not to traumatise myself.
If its a real thing and some poor tot is getting tortured, my watching it won't make the tots life any better. It might make my life slightly unhappier. Thus, don't click on links.