Let me help you. "Even though the people of Gaza democratically elected Hamas... they are innocent civilians." Yes, most of them are. Check the GC. "Israel`s response needs to be proportionate." Yes, that one's an absolute. Along with some other constraints. Something strange about that? "Even though there is nothing that prevents the EU or the Arab League from supplying essentials to Gaza through Eygpt..." Wow! You haven't noticed that Israel keeps the border closed? "...Israel is to be condemned for miposing "collective punishment." That's right. It's illegal. And what Hamas does doesn't make it legal. I'm really sorry to have to tell you that international law does not allow Israel simply to kill anyone she doesn't like. Of course, Israel can ignore international law. But, apart from justifying Hamas's actions (by the same logic that you offer), she'll have to take the consequences. Which are starting to look like a full EU boycott...
EU's Mogherini in Tehran to talk nuclear deal, regional issues (Reuters)
from the article: UN human rights chief urges Israel to exercise restraint on Gaza