By the numbers

Abortion Might Not Cut Crime Rates After All - Washington Free Beacon

A new paper suggests that abortion’s effect on crime is minimal, once its effect on population size is properly accounted for.

I've heard this before. You have to be very careful when someone says the trend they are showing you is based on some kind  of relative data. That means they have been playing with the  numbers to make it fit a narrative or they have just been throwing stuff against  a a wall to see what  sticks.