pAngry Brazilians protesteda in front of the National Museum in Rio de Janeiro on Monday, September 3, after a fire gutted the country’s oldest scientific institution the previous day.ppThis video, shared on September 3, shows angry protesters gathered in front of the museum.ppPolice in riot gear shot tear gas when a small crowd tried to enter the compound, the local media reporteda.ppThe cause of the fire is yet to be determined, but media reports saida that the 200-year-old historical building lacked a sprinkler system and had suffered years of financial neglect.