The guy with the hatchet in his hand is definately not from east Africa, it's very easy to tell, I've lived among Somalis and Eritreans they have very peculiar facial features, he's definately not Somali. I guess he could be Nigerian, they have a lot of Islamist militants over there, in the north of the country, while the south is majority Christian. Nigeria has been marred by several attacks in recent months, several beheadings too. You can google it, in one attack an entire Christian village was attack with dozens of people beheaded while they were sleeping at night.