negodovati

1. formal to express indignation; to protest; to grumble
   Građani negoduju zbog novih cena struje. — Citizens are protesting about the new electricity prices.
   Publika je glasno negodovala posle odluke sudije. — The crowd loudly voiced its displeasure at the referee's decision.

Usually used with "zbog" + genitive: negodovati zbog nečega.