Civic engagement and protest mobilization have generally been treated as distinct activities, with separate literatures examining each form of participation. This differentiation largely rests on the political nature of protest, which is treated as inconsistent with more apolitical civic engagement. We argue that the boundaries between protest participation and civic engagement became more permeable over time. We link this to consistency in the profiles of individuals who become engaged and the institutionalization of protest, which expanded the participatory base of protest to new groups. Using four waves of the European and World Values Survey, we analyze 78,524 individuals from 20 member states of the Organisation for Economic Co-operation and Development. Results from a multilevel multinomial logistic regression analysis demonstrate that while there have been modest increases in protesting and civic engagement over time, individuals participating in both types of activities have experienced the most growth, consistent with our argument.