We build upon research on immigrant political incorporation, intergenerational family relations, and civic organizations in order to investigate the relationship between parents' political engagement and their children's civic and political participation. Drawing on survey data from a representative sample of California's 1.5 and second generation youth population, our analyses demonstrate support for the top-down model of political socialization in which barriers to immigrant parents' political engagement suppress the civic and political participation of their US-raised children. However, this is not the case for our unique sample of youth who participated in activist civic organizations. Our findings from follow-up in-depth interviews with survey respondents indicate that, while most youth do not actively politicize their immigrant parents, those who gained significant political experience through activist organizations often seek to orient their immigrant parents to US politics. In describing the efforts of some youth to educate their foreign-born parents about politics and encourage their participation, we evidence trickle-up effects in the political socialization of immigrant families. We argue that future research on activist civic associations should consider the impact of individual-level organizational membership on family-level patterns of political engagement.