Comment by OgsyedIE

The historical data is that porn usage is inversely correlated with sexual violence: the countries with more access to porn have less rapes.

https://www.psychologytoday.com/us/blog/all-about-sex/201601...

If I had to guess at a reason, it is presumably because cohorts of socially undeveloped adult men are sexually sedated by porn and are less motivated to rape.