War

The establishment cannot explain why Somali jihadists attacked a Kenyan mall since Kenyans are neither free nor prosperous.

"According to the  Index of Freedom in the  World that attempts to measure economic, civil, and political liberties, Kenya ranks 91 out of the 123 countries included in the index. As for prosperity, based on the CIA World Factbook 2012, Kenya’s per capita GDP was estimated to be $1,700 per year which ranks 192 out of 225 countries."

Theory falsified. The motivation was blowback for invasion.