Discrimination vs Racism

Tij🌸 • Creative Writing & Quantum Mechanics Major. Which is fancy for big nerd.
Discrimination is treatment or consideration of, or making a distinction in favor of or against, a person or thing based on the group, class, or category to which that person or thing is perceived to belong to rather than on individual merit.
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http://www.diversityinc.com/ask-the-white-guy/ask-the-white-guy-is-the-oxford-dictionary-definition-of-racism-too-white-for-you/ 
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Brief summary of link (a quote from page): 
"If you look up who runs the Oxford University Press, which publishes the Oxford English Dictionary, you’ll find that the staff fits the very definition of “too white” (as do the top editors of the OED). Therefore, the definition of racism found there lacks nuance and is incomplete." 
"The concept that racism is power based—and flows from power to lack of power—is hard to grasp for majority people (defined in this country as white, male, heterosexual, Christian and with no disabilities)."
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However, Racism actually describes patterns of discrimination that are institutionalized as “normal” throughout an entire culture. It’s based on an ideological belief that one “race” is somehow better than another “race”.  It’s not one person discriminating at this point, but a whole population operating in a social structure that actually makes it difficult for a person not to discriminate.
Basically what I'm trying to explain is that white folk experience discrimination and prejudice (which is NOT okay) but they don't experience institutionalized and systematic opression and therefore do not experience racism.
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Thoughts? Ideas? Questions? :)
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P.S. remember to stay respectful and hydrated during what I predict to be a very intense discussion - tijqua💕