This is likely a joke. (At least thats how I take it. If the OP is for this, I'm against that). I'm against any undeserved killing of children, including abortion.
Plus anyway kids don't even know what they believe - they just rattle off what the nearest adult says, so, selfishly speaking, killing off a child for dissenting opinions is stupid. Stalin would've done it but that was because he didn't want a single dissenter in his kingdom. Thats why he also forced abortions on millions of mothers he didn't like.
However, I do take it you're probably fine with killing children if it falls under the category of an abortion.