lol the correlation between abortion and crime is gigantic. read "freakonomics" for a more detailed argument, but for now:
the people most likely to get an abortion are in the lower class, and (obviously) since they want to get rid of it, they almost guaranteed either do not have the means to care for this child, or do not want to care for the child, both of which end with the same result. the child is neglected, leading to an (approximately) 70% chance of them turning to crime.
dont know if you are old enough to know this, but in the early 90s, crime was increasing at an insane rate. the predictions from all the experts was that the future would be a world was one of hooligans and drug lords. but mid 90s, there was a gigantic decrease in crime, which was eventually linked to the Wade vs. Roe case around 20 years earlier, which resulted in abortion being legalized.
so, as the years went by, all these mothers with unwanted babies got abortions when they needed it.
twenty years later, the crime rate suffered it's huge drop, because the pool of potential criminals had decreased by an order or two of magnitude.
but some people started complaining that it was other things that had caused the crime rate to decrease.
luckily for "the abortion theory", some cities had been slower to respond to the court order than others. and voila: the cities who had legalized abortions first experienced their crime drop earlier than the cities who had legalized abortions later, regardless of the racial composition, the funding of the police force, or the number of prisons.
ZING!
tl;dr abortion lowers crime.