Final answer:
Civil rights groups have been successful in advancing their interests through the court system with cases like Brown vs. The Board of Education and the enforcement of Title IX, championing equal treatment and constitutional civil liberties.
Step-by-step explanation:
Civil rights groups have indeed been successful in using the court system to advance their interests. One iconic case is Brown vs. The Board of Education of Topeka, Kansas, which led to the landmark Supreme Court ruling that racially segregated schools were unconstitutional. This victory for the NAACP under Thurgood Marshall's legal strategy spearheaded further actions by civil rights groups to challenge segregationist practices and enforce constitutional provisions for equitable treatment.
Title IX is another example of success in the courts for civil rights, in this case, ensuring equal treatment for women's sports. The pattern of using the courts to protect civil liberties can be seen throughout various landmark Supreme Court cases, often involving unpopular litigants such as members of minority religions, publishers of controversial content, or criminal defendants seeking fair treatment under the law.