I’m not certain that Steven Levitt has ever directly said that black crime is reduced because of abortion, but he has said that crime was reduced in the 1990s because of abortion.
The reality is that crime was reduced in the 90s because so many states abolished parole (which is also why the prison population rose).
You remind me of a funny braindead lib (I repeat myself) that was unable to understand why the crime rate was way down despite the fact that prison populations were at an alltime high.