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."
MI5 face mounting pressure over claims the IS executioner 'Jihadi John', named yesterday as a London graduate, was known to them
Labour leader Ed Miliband is due to set out his party's plans on how it would cut tuition fees.
New drug driving laws are to come into effect next week, including laws on some prescribed medications.