Exactly. It stands to reason that inner cities have the most problem with brain damage from lead poisoning. Inner cities often have high percentages (in the ca

Exactly. It stands to reason that inner cities have the most problem with brain damage from lead poisoning. Inner cities often have high percentages (in the case of Baltimore a majority) of black people. If more black people live where more people have lead caused brain damage and this business model has sprung up to exploit them, it's a perfectly valid title for the article.