Isn't half the problem that there is a market for this sort of crap? Because it is being fed by those who continue to use it. Same as any other bad thing out there. Consumer-driven society.

You're struggling against pockets of the not-so-positive side of human nature, and so no wonder it feels overwhelming. (I'd imagine the people trying to stem the tide of drugs, child porn etc feel the same way.)

The suppliers aren't going to stop because they have a profitable market. The buyers aren't going to stop because a)there are things to buy and b)they simply don't care.

Self-gratification and damn-the-rest is a terrible, but more and more prevalent attitude these days. Everywhere. (Although there are also people doing good out there - and hope for better things.)

Is what you are doing, this grinding away, enough? Worth it? Only you can answer that. But it has got to be doing some good at least. Fingers crossed.