To state so assuredly that one will "defend our children" while knowing in one's own heart that that will mean delberately killing someone else's children makes that person inhuman. It makes you a beast, because that is how beasts and animals behave. It is not antisemitic to be shocked and disgusted at deliberate targetting of children. It is to be human. It is to be a mother.
The people in charge of targetting women and children on either side of the wall around Gaza are men and women with no perpective or education, no maternal instincts and no compassion. They are guided by self-interest, hatred, anger, tribal blood-lust and male pride. I am just as disgusted by this behaviour if it happens to be exhibited by a jew, muslim, catholic, protestant etc etc.
It is interesting to note that Israel justifies its attempts to wipe out its enemies in Gaza as self-defence, whereas Hamas admit that they are trying to wipe out Israel. But what they are attempting to do is kill each other.
You cannot excuse behaviour if it is wrong. You need to stop it.
I presume that those who support the behaviour of Israel actually think it is fine to kill another human being. They must be actually able to imagine going up to someone who has offended them or insulted them or hurt them, and stab them.
In that way, those people are behaving in the same way (whether in thought or deed, no difference really, in essence is there?) as any scummy knife-wielding gang member in London or Glasgow, or any angry upset suicide bomber or rocket launcher in the middle east. If you think it, it is the same as doing it. You have to try and think a different way. Saying "we must defend our children" and then going about it by blowing up other people's children is NOT THE BEST WAY.