Were they? I didn't know that. I knew about airstrikes in May against Palestinian Islamic Jihad terrorists...
Israel launches airstrikes to kill terrorists who threaten Israeli citizens. They don't much care if they kill Palestinian civilians in the process.
Palestinian terrorists launch rockets into Israel frequently with the express purpose of killing Israeli citizens. They often launch these rockets from civilian buildings in the full knowledge that they are endangering their own civilians.
I know which I think is more heinous.
In any case, Palestinian civilians get the shitty end of the stick.