No
No one in the country is advocating for overturning Brown v Broad or the Civil Rights Act. The Pro-Life base has been fighting for 50 years with numerous republican presidents promising this.
That said, I suspect Republicans will chip at these laws until they are meaningless. Several urban areas have segregation as bad as the 1950s now (white flight). Look at inner city schools in Chicago, Detroit, Memphis, St. Louis etc. 99% African American students.
I can also attest that Prince Georges County, Maryland public schools approach 99% African American and Hispanic.