Every single image I've seen of this has been overwhelmingly young males, the personal experience of everyone I know in the affected areas has been that they are overwhelmingly young males. In most cases cases "overwhelmingly" is an understatement, because they are all young males.

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