Huh, so basically, if somebody gives you an Iron Dome installation, and then I start shooting rockets at you, you are going to shrug it off? You are a hypocrite, debating about stuff you clearly know very little about (from reading biased news sources, no doubt).
Hamas infiltrated Israeli territory and started shooting down unarmed civilians. You can be as peace-loving as you want (I, too, think Israel could've done more to progress peace with Palestinians), but to sum it up as (Hammas isn't blameless, but Israel is responsible because it has more firepower is idiotic at best.
What's happening right now is murder of innocent people, clear as day. If you want to seek excuses for the perpetrators, something is really wrong with you.