Stupid. That is an adjective many newspaper editors will not allow in copy, more so when used in reference to a person even when the individual is a Kenyan politician.
However, since the use of indescribable is not encouraged because every well-meaning writer should have ability to describe any situation, stupid is fine, especially in reference to antics of Kenyan politicians, the situations they put Kenyans in or cause to happen and then revel in.