My reading is that Unilever had a large non-indigenous workforce living on a plantation that was attacked. This was a western Kenyan plantation and I suspect the workers had travelled there from other west-Kenyan areas based on their tribe. I'm not expert on Kenyan law or the way these business contracts play out but I feel the issue at play here is if Unilever has a responsibility to protect workers when nationwide ethnic violence breaks out, and they have non-indigenous workers.