It is VERY well documented by sociologist that the drop in crime rates in the 80' and 90's is directly attributable to Roe v. Wade.
Dunno about that, I don't read sociologist's "research". I do read other research, though, and there were some published actuarial studies cross-referenced in a medical article I read some time ago that showed a very strong correlation between the huge abortion rate among black women and the reduction in crime rate.