How can activist bureaucrats unexpectedly influence policy outcomes? What strategies do these actors adopt in order to defend and implement public policies in institutional settings unfavorable to their ideas? How do the individual trajectories of activist bureaucrats influence their strategies and repertoires of action? Drawing from the literature on institutional activism, this article shows how bureaucrats worked as activists to create and institutionalize participatory arenas in slum upgrading projects, within an institutional setting adverse to popular participation. (mais…)