As the 21st Century unfolds, the traditional welfare state that evolved during the 20th Century faces serious threats to the solidarity that social programs were meant to strengthen. The rise of populist and nationalist parties reflects the decline of a sense of belonging and inclusiveness that mass education and economic progress were meant to foster, as traditional politics and parties are rejected by working- and middle-class individuals who were previously their staunchest supporters. Increasingly, these groups reject the growing gaps in income, power, and privilege that they perceive between themselves and highly educated and cosmopolitan business, academic, and political elites. When Strangers Become Family examines the potential role of civil society organizations in guaranteeing the rights and addressing the needs of vulnerable groups, paying particular attention to their role in advocacy for and service delivery to older people. The book includes a discussion of the origins and functions of this sector that focuses on the relationship between the state and non-governmental organizations, as well as a close examination of Mexico – a middle-income nation with a rapidly aging population and limited state welfare for older people. The data reveals important aspects of the relationship among government actors, civil society organizations, and political parties. Ronald Angel and Verónica Montes-de-Oca Zavala ask the fundamental question about the extent to which civil society organizations represent a potential mechanism whereby vulnerable individuals can join together to further their own interests and exercise their individual and group autonomy.