“200 years of work, research and knowledge have been lost,” President Michel Temer said in a statement.
Handing public security to the military is likely to worsen the plight of poor residents who are already subject to the worst of Rio's violence.
Members of an “uncontacted” tribe in the Amazon were reportedly killed by illegal miners.
The miners reportedly bragged about the slaughter.
The country's top prosecutor has charged the president with accepting bribes.
Temer was purportedly taped agreeing to bribe a powerful witness in a corruption investigation.
This will be Brazil’s first general strike in more than two decades if it gets widespread participation.