Commuting chaos has entered its second day in Sao Paulo, a week before the opening match of the World Cup, in protest over housing conditions.
Police used tear gas to break up a demonstration blocking access to one metro station, but a third of the city's subway stops remained closed early in the morning.
The strike already set a record on Thursday for morning gridlock in Sao Paulo this year, with many people now using the already stretched bus services in the city.
More top news
Temperatures are predicted to reach a high of 23C.
Hunt accused companies of "turning a blind eye" to a generation of children "exposed to harmful emotional side effects" of social media.
Top temperature 24C/75F.