Partisan historians aren't historians...they're propagandists.
History's fuction is to discover the past and to create a narrative that helps us understand it.
Hopelessly naive. That's what they are SUPPOSED to do. But starting a few decades ago, leftwingers undertook the task of revising history to show everything was the fault of white men and america.
If one comes at that task with an agenda (liberal conservative, what-have-you) then one is no longer truly an historian.
Welcome to the leftwing-controlled academy.
As the right wing trumpets the value of Warren G Harding and Calvin Coolidge
Shaaaaaduppp.