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I'm speaking without referring to text and references here, so you're getting second hand information and don't take my word as covenant for what CRT is.
That said, as I was taught it, CRT is something that recognizes historical disadvantages that some have over another, especially the advantages whites have predominantly over blacks. Such as in the case of those families who have carried their legacies from the years of when plantation slavery was legal. These families have their financial empires/dynasties set in place by centuries of being financially ahead. It is impossible for blacks to have such an equal advantage and are, as a majority, no where near having as close to equal financial representation in this respect. "Old Money" in the white demographic is far higher than that within the African American Community. In essence, critical race theory is simply this: Looking at history objectively and recognizing the cause and effects that our history has had on each race.
https://www.youtube.com/watch?v=4K5fbQ1-zps
Going further, CRT is taught in a more neutral model (as how I was taught.) Such as the different challenges people face based on their backgrounds. Like mental health, family history, and so on. One such video which highlights the differences in the advantages of those who start in wealth versus those who start in poverty can be seen in this four minute video in which college students race for a 100$ bill and are able to take one step for each privilege the teacher lists off.
By the end of the video, the difference is clear. The "race" was an analogy to life. Many white families have head starts in life. Families in the black community are still working on getting their start. We've had four hundred years to till the soil of our legacies, and build our wealth. The African American Community has only received equal rights within the past 52 years. 52 Years. Even then, at the start, it was really rough getting their foot in the door.
I even worked for a legal firm whose job was to handle a class action lawsuit for over one billion dollars where the USDA had discriminated against people of color by denying them loans based on their skin color. There were families who were more eligible for loans than white folk, but they would see them get the loans while they didn't. There were approximately 80,000 claimants. And those are just the farmers who suffered discrimination 30 years after equal rights were granted.