You seem to be saying that the problem is overpopulation, thus it is ok to kill selected minorities ( fetuses).
Remember that I postulated that the anti-abortion folks consider the fetus as human: To one holding THAT opinion, YOUR opinion that the fetus is NOT human is NOT valid, any more than the opinion of the Nazis about Jews would be considered valid.
If YOUR solution to overpopulation is abortion, than how can you object to someone else deciding that the solution to overpopulation is to invade other countries, and kill off their populations?
Just a different "select" group to be eliminated, or at least decreased.