Greta Thunberg and 36 other Extinction Rebellion activists have received an urban daspo from Venice after the unauthorized protest on 22 November that turned the waters of the Grand Canal green. From the Rialto Bridge, the Swedish activist poured fluorescein, a harmless tracer substance, into the canal. The action took place in the final days of COP30 in Belém, Brazil, adding symbolic weight to the demonstration. All participants were also fined 150 euros. Thunberg had attended a public discussion at the University of Verona prior to participating in the environmentalist group's Venetian demonstration. Veneto Region President Luca Zaia criticized the idea, calling it "a gesture that shows little respect for our cities and their fragility", on social media. "I'm shocked to see Greta Thunberg among those behind this meaningless protest. They are not looking to promote awareness, but to obtain attention". The action was part of the "Stop Ecocide" campaign, which featured over 10 Italian cities (Venice, Padua, Trieste, Bologna, Genoa, Milan, Palermo, Parma, Taranto, and Turin) turning rivers, canals, and fountains green to protest the government's "ecocidal policies". In some cities rivers were dyed green; in others, seawater. This was the case for the waters of the Grand Canal in Venice, Trieste, and the ancient port of La Cala in Palermo. In Padua, it was the waters of the fountain in Prato della Valle that were colored. Police in Venice identified numerous participants and seized protest items. Extinction Rebellion described the usage of fluorescein as "a safe compound, chosen for its strong visual impact". The reasons for the protest were summarized in a post: "The most significant global summit to establish international political agreements aimed at addressing climate and social collapse is nearing its conclusion, and once again, Italy has been among the nations that have most obstructed the most ambitious initiatives".