Guilherme Boulos is a Brazilian politician and activist known for his work in social movements, particularly in housing rights. He is a member of the Socialism and Liberty Party (PSOL) and has been a prominent figure in the MTST (Homeless Workers' Movement), advocating for the rights of low-income families and the homeless. Born on August 19, 1982, in São Paulo, Boulos gained national attention during his campaigns for public office. He ran for mayor of São Paulo in 2020, where he focused on issues like urban reform and social justice. His activism and political career have made him a significant voice in contemporary Brazilian politics.