Think about how labor unions organize workers to come together and bargain for their pay, benefits, and workplace protections. The actors in that case are the workers, the union, and the boss or management. In a tenants union, the main actors are tenants, the tenant union, and the landlord.
A tenant union builds confidence for those who often have the least power in society and helps them exercise direct democratic power in their political, economic, and personal lives. We are ultimately stronger when we stand together!