I'm not going to even begin to pretend that I know the complete truth about what's been going on in Gaza over the past several months, and you shouldn't either. On one hand, it would be foolish to trust everything the Gazan side has to say about casualties given the fact that they have everything to gain from exaggerating. On the other, though I certainly lean more toward believing them, Israel's claim to be entirely above reproach when it comes to minimizing civilian casualties and human rights abuses is likely also at least somewhat overblown. War, especially of the sort being fought over there, is an ugly thing, and we'll doubtless never know all the facts from the fiction about this conflict even years after it mercifully ends.
That said, just for the sake of argument, let's pretend that the pro-Hamas leftist protesters blocking traffic, attacking police, kidnapping people, destroying property, and making general nuisances of themselves are right, that Israel really is waging a murderous, scorched-earth campaign of aggression not seen since Scipio Aemilianus plowed and salted the earth where Carthage once stood, and that the Hamas leaders of Gaza are merely a ragtag bunch of plucky freedom-fighters just taking a stand against the man, or something. Let's assume all that is right, in the worst/best possible way for both.
Would the protestors then have a valid........