Doing an effective child abuse awareness print campaign is nearly impossible. I've seen so many bad ads in this category over the years.
These executions, via Y&R Mexico, are not perfect (readable typefaces, please, art directors). But they at least make a clear, memorable, powerful point.
Copy: "70% of abused children turn into abusive adults. Donate at savethechildren.mx. Break the circle."
The best two child abuse ads I've seen are TV commercials: this "Shit Kids Say" spot via the UK, and this brutal one via Ireland—which is one of the best PSAs I've ever seen.