What causes of action can be brought by a private individual and what defendants can be sued or Title VII discrimination from housing properties that are part of a housing authority’s “Project-Based Voucher Program”? Can any such claims be brought as a class?

Hi, I’m looking for a short memo on the following topic:

What causes of action can be brought by a private individual and what defendants can be sued (landlord, property owner, government agency, etc.) for Title VII discrimination from housing properties that are part of a housing authority’s “Project-Based Voucher Program”? Can any such claims be brought as a class?