Libya has seen the emergence of all kinds of brutal armed entities, most of whom made life hell for the migrants they encounter in their territory.
In 2015, the so called Islamic State produced a gruesome video showing the beheadings/shootings of 28 Ethiopian & Eritrean migrant that the group kidnapped, and targeted for their faith.
It's a particularly unforgettable, traumatizing tragedy, which led to riots and mass mourning processions in Ethiopia.
https://www.cnn.com/2015/04/19/africa/libya-isis-executions-ethiopian-christians/index.html