I live in Nairobi and have for several years after additional time spent in such garden spots as Burundi, Northern Ethiopia, and Rwanda (actually quite nice in a Singaporean type of way). I've "evacuated" myself from an earlier ethnic flare up in the region I was living in Ethiopia in 2016. Anyone living in many countries in the developing world knows there are risks, from the mundane like awful driving habits and enforcement of traffic regulations, to the possibility that in unstable states, peace may not last as long as you think, even in the leafy green diplomatic quarter.
I feel sympathy for people there as you build up ties and communities with other expats and locals that are painful to just leave saying nothing of your job, but I don't expect the US Government to save my a** if Kenya were to go and have another bout of violence ala 2007-8 and I decided against any sensible judgment, to sit tight. These people aren't victims and I've sadly seen far too many like her hang on well after it would be sensible to the point where we've had to require people to sign letters of releasing my employer from liability stating they were going to sit in Addis Ababa and wait for the TPLF to roll into town, despite us telling them to GTFO (and here's the plane ticket we bought for you).
If this possibility is that much of a no-go for someone, then stay in the US or look for work in any number of countries that are not at high risk of serious instability.