Are they not? They have killed more innocents (or at least as far as we know they had prior to this current conflict). Israel isn't "bad" but it's government is.
This is a report from the region about the afteath of an unprovoked raid by Hamas against her neighbor. This is what Hamas chose and intended to happen and it's nominally the justification for the bombs going off in Gaza right now.
If this has been an attack launched by West Bank Palestinians you'd have an argument. But this is coming from the Gaza strip. The strip has the 1967 peace borders, no settlements and self rule. In the mid 2000s every Jew was evicted from the strip, every settlement emptied in a model for what peace and a 2 state solution was suppose to look like for the region.
Wasn't the attack in internationally recognized Palestinian territory? The fact the attack is considered to be in Israel at all is provocation of some sort. Now, you may argue it wasn't justified, but it surely was provoked.
No, they crossed the internationally recognized 1967 borders (which are in effect on the Gaza Strip) to commit this attack. Israel (specifically Israeli's left wing coalition) pulled all of its settlers and settlements out of Gaza in 2004,5 and established the 1967 borders to try to demonstrate that pulling back to the '67 borders would lead to peace and would be worth it to do so to establish a Palestinian state.