it's hardly hidden! It's obvious to all who see.
I like them. I wish the government would support them more though. They're really being abused. As chatarreros they earn almost nothing, and as topmantas (street vendors selling fake handbags) they're often rounded up by the police and insulted by tourists. I'm pretty sure they get only peanuts from the people that import all these fake goods too. They're really at the bottom of the food chain.
It's really sad. I wish I could do more for them, but I can't even vote here. I heard the mayor of Barcelona (Ada Colau) is really aware of their plight, but there is only so much she can do either. Most of the core issues are national formalities like residency.