There is a simple solution for this.
Round them up and deport them all to Somalia or some other African place. There they can do whatever they want. Unless they get killed by the Massai tribes or friendly folks in the Congo region...
Get rid of the lcontents. Don't waste money puting them on trial for attempted mass murder. They aren't worth it.
They want to die and their lifestyle indicates as much.
Deport them immediately. Let nature then take its course...