Racism is the normal, everyday manner in which US society functions and is the experience of most US people of color (POC).
White people do not have much incentive to fight it: those in power benefit materially, while those who are working class benefit mentally.
Race is a sociopolitical construct that was originally invented to justify the Transatlantic Slave Trade in the face of condemnation from both Enlightenment thinkers and the Catholic Church (see Painter's 'The History of White People' for more).
Despite this, society continually proclaims, implies, and artificially creates conditions that seemingly prove the superiority of whiteness.
Whiteness is granted whenever it is economically/politically profitable for those in power (Italians, Irish, conditionally for Jewish and Arab people) and is as easily taken away.
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