Brazilian anon here. Just one piece of info about the fire in the National Museum which I don't know if it has been posted before:
When the firemen arrived, there was NO WATER IN THE HYDRANTS closest to the museum.
https://www.oantagonista.com/brasil/nao-havia-agua-nos-hidrantes-museu-nacional/
I initially thought this fire was just another combination of misfortune and incompetence. I'm not so sure now.