Liberty, however late.
This comes from a verse on Virgil’s first Eclogue and was going to be the flag of the republic the conspirators wanted.
The sad part is that as everything in academia, the whole Inconfidência Mineira was given a lot of Marxist undertones over the years.
It happened because Minas Gerais, the state where everything happened was the biggest producer of gold in the entire colony and the crown demanded more and more and imposed and 1/5 tax on all gold produced and eventually taxed even more as the yield of gold started to lower. The conspirators decided that enough is enough and began plotting a revolution to make Brazil independent and make it a republic.