According to the Social identity model of collective actions, identification with a group is an important precondition of collective actions. However, politicized identities, or identifications with political organizations or initiatives aiming to achieve specific goals reflecting relevant concerns, were established as a more relevant determinant of collective actions compared to mere identification with a social group, implying that citizens considering various subjects irrelevant should exhibit the lowest levels of activism despite identification with an overarching social group. Additionally, many measures of activism operationalize it as a general tendency towards participation in normative collective actions without studying the patterns of activism from a person-oriented perspective, which could reveal some potentially relevant heterogeneity in the construct. All this motivated us to conduct a latent class analysis of activist behavior and intentions items (signing petitions, boycotting products, participating in lawful demonstrations and unofficial strikes) from the Croatian sample collected within the fifth wave of the European Value Study to determine the patterns of activism, and follow-up analyses aiming to determine whether these classes differ with respect to social identification (closeness to one’s own town, region, country, continent, world, and pride in citizenship) and concern with different subjects (neighbors, people from the region, countrymen, Europeans, humankind, elderly, unemployed, immigrants, people with disabilities). Analyses revealed a three-class solution: activists, (dominantly) non-activists and individuals willing to participate in political actions (who dominantly did not report participation). While the differences in identification were somewhat less consistent and suggested that activists and non-activists were similarly identified with national and supranational groups, activists were less proud of their citizenship. On the other hand, non-activists were least concerned with their neighborhood, region, and fellow countrymen, as well as humankind, elderly and unemployed citizens, immigrants and people with disabilities), confirming the relevance of politicized identities reflecting through concern with specific issues.