No idea who is summarizing like Proust there. 
Looking at academia there are more understandable summaries:
https://owl.purdue.edu/owl/subject_specific_writing/writing_in_literature/literary_theory_and_schools_of_criticism/critical_race_theory.html
Critical Race Theory, or CRT, is a theoretical and interpretive mode that examines the appearance of race and racism across dominant cultural modes of expression. In adopting this approach, CRT scholars attempt to understand how victims of systemic racism are affected by cultural perceptions of race and how they are able to represent themselves to counter prejudice.
Closely connected to such fields as philosophy, history, sociology, and law, CRT scholarship traces racism in America through the nation’s legacy of slavery, the Civil Rights Movement, and recent events. In doing so, it draws from work by writers like Sojourner Truth, Frederick Douglass, W.E.B. Du Bois, Martin Luther King, Jr., and others studying law, feminism, and post-structuralism. CRT developed into its current form during the mid-1970s with scholars like Derrick Bell, Alan Freeman, and Richard Delgado, who responded to what they identified as dangerously slow progress following Civil Rights in the 1960s.
Prominent CRT scholars like Kimberlé Crenshaw, Mari Matsuda, and Patricia Williams share an interest in recognizing racism as a quotidian component of American life (manifested in textual sources like literature, film, law, etc). In doing so, they attempt to confront the beliefs and practices that enable racism to persist while also challenging these practices in order to seek liberation from systemic racism.
As such, CRT scholarship also emphasizes the importance of finding a way for diverse individuals to share their experiences. However, CRT scholars do not only locate an individual’s identity and experience of the world in his or her racial identifications, but also their membership to a specific class, gender, nation, sexual orientation, etc. They read these diverse cultural texts as proof of the institutionalized inequalities racialized groups and individuals experience every day.
As Richard Delgado and Jean Stefancic explain in their introduction to the third edition of Critical Race Theory: The Cutting Edge , “Our social world, with its rules, practices, and assignments of prestige and power, is not fixed; rather, we construct with it words, stories and silence. But we need not acquiesce in arrangements that are unfair and one-sided. By writing and speaking against them, we may hope to contribute to a better, fairer world” (3). In this sense, CRT scholars seek tangible, real-world ends through the intellectual work they perform. This contributes to many CRT scholars’ emphasis on social activism and transforming everyday notions of race, racism, and power.
More recently, CRT has contributed to splinter groups focused on Asian American, Latino, and Indian racial experiences.
Most CRT scholarship attempts to demonstrate not only how racism continues to be a pervasive component throughout dominant society, but also why this persistent racism problematically denies individuals many of the constitutional freedoms they are otherwise promised in the United States’ governing documents. This enables scholars to locate how texts develop in and through the cultural contexts that produced them, further demonstrating how pervasive systemic racism truly is. CRT scholars typically focus on both the evidence and the origins of racism in American culture, seeking to eradicate it at its roots.
Additionally, because CRT advocates attending to the various components that shape individual identity, it offers a way for scholars to understand how race interacts with other identities like gender and class. As scholars like Crenshaw and Willams have shown, CRT scholarship can and should be amenable to adopting and adapting theories from related fields like women’s studies, feminism, and history. In doing so, CRT has evolved over the last decades to address the various concerns facing individuals affected by racism.
Interestingly, CRT scholarship does not only draw attention to and address the concerns of individual affected by racism, but also those who perpetrate and are seemingly unaffected by racial prejudice. Scholars like W.E.B. Du Bois, Peggy McIntosh, Cheryl Harris, and George Lipsitz discuss white privilege and notions of whiteness throughout history to better understand how American culture conceptualizes race (or the seeming absence of race).