What are the problems for the locals associated with blood diamonds?

Blood diamonds are collected, traded, and dealt in order to fund mayhem, civil war, terrorism and other atrocities against humans.

Locals are enrolled in digging for diamonds by hand at gunpoint, and can be killed, maimed, and lose their families to the thugs who deal in blood diamonds, a natural resource in some geographies.

Any 'local' who happens to be 'nearby' during any blood diamond transaction, from mining, trading, brokering, hiding or stealing them, can be killed, maimed or otherwise abused by people whose commerce is blood diamonds.