I don't mean that, nor do I understand how you drew such an inference from my post to you. There is no instance that I know of where Jews have suppressed such knowledge. I, for one, remember learning it in high school, and have long thought it common knowledge.
"If they care so little about these other peoples, why should non-Jews care about them?"
IMO, your description of Jews caring "so little" for others is totally erroneous. However your point that non-Jews care little for Jews has historically been true. One would hope that that is changing these days, at least in the U.S.