The climate crisis calls for radical action, but what drives people to engage in climate protest? We recruited respondents during protests of Extinction Rebellion in the Netherlands and examined how intentions to engage in normative action (e.g., protest march), moderate nonnormative action (e.g., roadblock), and openness to more extreme nonnormative action (e.g., property damage) related to perceived injustice and trust in authorities. Study 1 found that perceived injustice was linked to all action intentions, while trust was only negatively associated with nonnormative protest. Study 2 revealed that nonnormative protest was specifically related to lower trust in democracy, judges, and the police. Furthermore, moderate action intentions were related to various injustice perceptions, whereas extreme actions were exclusively linked to social injustice.