Cancel culture, I may have heard this term before, if not... I certainly can surmise what it means.
Cancelling out our history.
Cancel culture = Removing anything that doesn't fit the Progressive worldview or that might be in the smallest way offensive or forcing someone out of the spotlight for past things they might have said but are now considered offensive.
Removal of Confederate Statues and taking the names of Civil War generals off of buildings is part of the cancel culture.