Right, the left thinks there are no differences between individuals, social groups, cultures, economic classes, genders, and so on.
Which is why, of course, Marx didn't think such a thing as class struggle existed, or feminists do not believe gender and sex discrimination exist, or race activists do not believe differences based on race exist. Or postcolonial theories do not believe there is any difference between colonizer and colonized.
And of course, Diversity Equity and Inclusion divisions, being left winged creations, are actively denying that any differences exist between human beings. Their central claim is that Diversity is in fact a myth.
The level of stupidity in these forums is truly astonishing.