Final answer:
Non-uniform covenants, also known as restrictive covenants, are primarily associated with racial segregation in housing, preventing the sale or rental of properties to certain ethnic groups, which was overturned by significant Supreme Court rulings.
Step-by-step explanation:
The non-uniform covenants primarily cover the topic of racial segregation and discrimination in housing practices, particularly targeted against African Americans and other minority groups.
Restrictive covenants were inserted into property deeds, preventing the sale or rental of property to specified ethnicities, including Black people, Jews, Chinese, Catholics, and others.
This form of discrimination was upheld through legal measures until landmark Supreme Court decisions, such as Buchanan v. Warley (1917) which declared such laws unconstitutional, and Shelley v. Kraemer (1948), which rendered the enforcement of these covenants by the courts illegal.
Eventually, in the spirit of strengthening civil rights, legal advancements continued, evidenced by decisions like Loving v. Virginia (1967) that struck down laws being used to maintain racial segregation and inequality.