It’s very telling that the media began insinuating (or labeling outright) Representatives Omar and Tlaib as being antisemitic for criticizing Israel’s response, but when Sanders says the same thing, and even more, they don’t.
If it’s not antisemitic for a Jewish person to say, it’s not antisemitic for someone else to. No one is immune from criticism that would otherwise be valid, simply because of who is giving it.