Had his homemade bomb gone off Conflict.Attack.DetonateExplode — one he had diabolically constructed ArtifactExistence.ManufactureAssemble.Unspecified using shrapnel coated with a substance meant to keep blood from clotting in wounds — Kevin Harpham would have undoubtedly caused the death Life.Die.Unspecified and injury Life.Injure.Unspecified of many people at last year ’ s Martin Luther King , Jr . Day Unity March in Spokane , Washington .