I chose this recent story from Agência Pública, about environmental infractions committed by companies and economic groups investigated or mentioned in the famous "Car Wash" corruption case.
https://apublica.org/2020/02/os-rastros-da-lava-jato-na-amazonia/
Pública did a big investigation showing that these companies committed infractions totaling R$ 600 million in the Legal Amazon, a region that involves nine states in the country.
They used data to hold the companie accountable, show the amount of money in the infractions and the licenses distributed, and also how the federal government helped these companies (through financial aid).
I think the story lacks of intercation. It would be nice to have a map to point out where in Brazil (in the Legal Amazon) were these environmental infractions.