Despite Alex Edelman’s opening caveat that “my comedy barely works if you’re not a Jew from the Upper East Side,” he is one of the rare, masterful stand-up comics who can “cast out” and then successfully “reel back in” a diverse audience. He can take his monologue way off-topic, on a tangent that itself could be a stand-alone show. Although the thrust of Just for Us is his attendance at a white-supremacist gathering, along the way he signs and mimics the distress of a gorilla at Robin Williams’s death (the gorilla really grieved), then quips that Brexit should be called “The Great British Break-Off,” and lovingly, yet mercilessly, spears his family, their Hebrew names, his brother’s Winter Olympics prowess as part of the Israeli skeleton team, and his Orthodox Jewish parents’ finessing of Christmas (including a decorated tree in the garage) to comfort a bereaved Christian friend.