Road blocks and marches hit Brazilian cities on Thursday as disparate groups criticised spending on the upcoming World Cup soccer tournament and sought to revive a call for better public services that swept the country last June.
Brazil is threatening to halt construction on the already delayed World Cup stadium over concerns for workers' safety.
Prosecutors claim to have found irregularities at the Itaquerao Stadium, where nearly 20,000 temporary seats are being installed ready for the opening match in four weeks.
Constructors were reportedly advised about safety problems a few weeks ago, but nothing has been done.
But the company in charge of the temporary seats dismissed claims work would be stopped and said the complaints were about "minor issues."
It comes after the government announced international GCSEs, which many private schools use, would be dropped from the league tables.
Rape suspects will need to prove to police that a woman consented to sex under fresh new guidance in sex offence cases.
Dippy the Diplodocus is to forced into retirement and moved out of the Natural History Museum's main hall.