"Siku ya Nyani Kufa miti yote huteleza" - How Kenyan political parties have justified this statement

The Swahili saying Siku ya nyani kufa miti zote huteleza, loosely translated to mean on the day of the monkey’s death, every tree it jumps onto is slippery, is one that is commonly used it times of war.

It implies that when the time for one’s downfall has come, there is very little the victim, usually a combatant, can do to salvage themselves. But monkeys are not very popular animals in the Swahili culture hence the saying is mostly used in reference to evil individuals or schemers and proponents of doom. When the Swahili use that saying in reference to you, you have a reason to be very afraid. They are simply saying that they do not like you and your days are numbered, literally and figuratively.