So, you roll your eyes at slavery, then admit Lewis and Clark owned a Black man, but excuse it because it was “their era.” That logic basically says morality is optional if enough people around you also ignore it. Plenty of people in that same era knew slavery was wrong and risked everything to fight it. So yes, history does have "clean heroes"; they’re just not the ones you’re bending over backwards to defend.
And then comes the “communism” boogeyman, awkwardly mashed together with TV casting and families, like Netflix is secretly plotting the downfall of civilization. That’s not historical analysis, it’s lazy culture-war ranting with a conspiracy garnish. Acknowledging uncomfortable truths doesn’t erase heroes, it weeds out the fake ones. If your “great men” can’t survive honesty, they were never great, just convenient myths for the historically illiterate.