Liberals don’t believe in history, so this will mean nothing to them. They make up their own “histories” for political purposes so they figure everyone else does (and did), too.
That's why I prefer older history books. Anything written after 1960 is suspect, IMO, due to the infusion of liberal ideologies.
One interesting anecdote in that regard: I have a high school history book from 1979. Among the specially treated minority groups are Jews. You don't see that today. Blacks, hispanics, women, etc get special sections; but not Jews. I wonder exactly when the Jews fell out of favor with the publishers/editors.