Jair Bolsonaro and his supporters are getting frustrated. The whole world can see that the direction the country is taking is extremely dangerous. Rather than changing tack they have decided to silence the detractors.
Whether environmental researchers, academics or officials, it seems that no one is safe. Increasing numbers of these professions are being forced to seek safety abroad to avoid threats to their lives.
This is not the behaviour of a democracy leader, and it wont work