The meaning is that before you judge something else, take care of your own faults first, sure Japan has its share of (virtual) loli porn stuff, but as said in the article; "her own nation has the highest rates of sexual violence in all Europe".
"her own nation has the highest rates of reported sexual violence in all Europe"

Fixed that for you.

I hope you're not saying that Japan is free from sexual crime. Take a look at the articles I posted. Especially the one about the segregated trains. Consider that 1) Japan defines "sexual crimes" by its own skewed standards, and 2) Japan is a ridiculously misogynistic culture, and that even in cultures where women are actually respected, being a victim of a sexual crime carries the stigma of embarrassment and that most cases go unreported.

That article is pretending to play the numbers game, but is pretty much ignoring half of the issue. Japan isn't as safe and clean as you'd like to imagine.