free market at its purist? >> tunti: exactly. lagos has been able to grow and expand its borders and that comes from the sweat of people on the street. once government interferes in private activity, more often than not, they make it complex. and they move it towards extinction. [ cars honking ] ♪ >> tunti: a lot of people are outside the tax net, so the state government has to do very genius in trying to get taxes. >> anthony: right. [speaking foreign language ] who really runs the streets -- the de facto front line of law and order or area boys? >> tunti: the government tries to get people on the street, like the foot soldiers. >> anthony: an area boy's crew levels street taxes on, well,