The data on that map is from 2015.
If you want to read about migrant/illegal border crossers from Africa in recent years, italy has been bearing the brunt of it.
https://www.google.com/search?q=italy+migrants
Here's a recent video from a spanish beach that looks like some kind of absurdist theater. https://www.youtube.com/watch?v=xA02zZCGTdk
I also have some issues with what qualifies as "mass societal disruption", but I guess that's mostly a semantics argument.
How about pre-meditated and coordinated sex attacks with 1000+ perpetrators?
This was hardly an isolated incident, just one of the more shocking in scale and brazen in execution.
https://www.google.com/search?q=new+year%27s+eve+cologne
Societal disruption needn't be limited to large scale events like the above, just the steady flow of increased crime disrupts and degrades society. https://www.google.com/search?q=migrant+crime
I'll fall back to my other question then, why would people leave? I was looking at this image: https://en.wikipedia.org/wiki/European_migrant_crisis#/media...
It seems like most migrants at the moment are not from Africa. If their motivations are mostly economic, we would expect the numbers to rise in proportion with the population, right? And they would be tempered by economies improving as their citizens get healthier and more productive and they stop having to fight and treat malaria. After some time, people will adapt to having healthier children and the rate of population increase will get lower.
I'm just not seeing this imminent crisis of exploding numbers of African migrants, and I don't see how the issues of integrating people could possible outweigh the benefits of people not dying.
I also have some issues with what qualifies as "mass societal disruption", but I guess that's mostly a semantics argument.