The majority, probably even the vast majority, of what we call the left has denounced Hamas’s attacks on Israel and has no trouble holding in its collective head two ideas at the same time: that Israel’s blockade of Gaza is a complete moral horror, and that what Hamas did last weekend is its own moral horror and utterly without justification. But what to make of the defenses and even celebrations of Hamas’s attacks by a few leftists?This isn’t hard or complicated. Representative Alexandria Ocasi