The idea that we fundamentally have more things in common than we have differences; that it is important to cross borders of race, ethnicity, class, and geography; that no neighborhood is the preserve of any one racial, ethnic, or religious group; and that all forms of illegal discrimination must be fought, wherever and whenever they manifest themselves. Once upon a time, it was called the Civil Rights Movement.
This legislation prohibited housing discrimination on the basis of lawful source of income, including, but not limited to, discrimination on the basis of being a recipient of a Section 8 housing voucher.