Now we know why they need to erase history. Their scheme of socialism has killed billions in the past 120 years.
According to Rudolph Rummel, socialism murdered* 262 million people since 1900. To put that in perspective. In 1960 the Rand Corporation estimated that a US/Soviet nuclear exchange would kill about 160 million in a month.
Socialism is literally as though the world experienced a slow motion nuclear war. God knows what humanity lost in the dead. The science, the medicine, the arts, etc. It is a crime that is utterly immeasurable when you consider what a quarter of a billion people may have done in life.
(*this refers to literal deliberate criminal murder, not the dead from warfare, bombing, etc.)
So, rhetorical question. When some people want to inflict socialism here, what would the dead tell you about how far one should go to stop them?