America carry out a research to know what is the cause of fornication. They found that pornography is the cause mostly. If a child had access to pornography that will motivate he/her to practice such picture. That 90% of fornication is cause by it.

They now asked the parents to prevents their children against things that has pornography on it.

The question However is as a father or mother how can you prevent your child from pornography?

I actually fornicated and adulterated before I watched any h-indecency o!
Even with my dog first!
So. . .this theory does not wasssssh!

With social media, virtually impossible.
You can only advise your children.
You can't supervise them 24/7.
They will learn from their own mistakes.
Just be available to lend a shoulder and some 'hankies'. . . when the time comes.