Brazil is one of the world’s largest oral care markets, with people investing time and money on getting their teeth gleaming. But their taste for cosmetic dentistry and habit of carrying around a toothbrush isn’t just for stunning selfies – the perfect smile also demonstrates cleanliness and status.

To showcase the diversity of Rio de Janeiro during the Olympics, Instagram has created Instawalk Rio – a walkable tour of the city’s unique street art scene. It features prominent works created for the Games, alongside murals and collages specifically commissioned by the social network.

Social media has found a fertile environment amongst highly sociable Brazilians. The nation has openly embraced these platforms and is fully engaged – people in Brazil typically spend 12 hours a month on Facebook, almost twice the global average. But what's driving this uptake?

In the past, downplaying one's black identity in Brazil was key to socioeconomic prosperity and survival. But now, emboldened by finding an elevated voice on the internet, black-Brazilians are celebrating it by building and supporting black-owned businesses.