At this point it seems to me like you don’t know the definition of the word ‘definition’.
The actual definition of racism is prejudice against a person based on their membership of a racial category. That’s it. There’s a related definition of racialism, which is the belief that distinct biological categories called races exist, some dictionaries record these two as synonymous, but I think they’re pretty obviously distinct concepts. I don’t believe in racialism.
What you’re describing is the sociological theory of institutional racism, which is a separate thing to plain ol’ racism, it’s a distinct form of racism. There may be some truth to be found in said sociological theory, but it’s worth remembering that sociology isn’t a science, and that sociological theories aren’t facts (i.e. they’re not theories in the same way that the theory of gravity is a theory), and whatever truth may be found in there it doesn’t override the simple definition of racism, prejudice against a person based on their belonging to a racial grouping is racism.
There has obviously been a very real attempt to muddy the waters around these definitions over recent years, but thankfully privileged academics don’t get to define how we use language.
