Can there be any other reason, then the possibility they may have no other option like leaving here and go somewhere else with more favorable conditions? 756,000 inmates in all the prisons of the world have lost their lives in gang feuds within the prison walls. An ideology, a race, a way of doing things, a religion, an individual. On the other hand you have a population that acts exactly like prison inmates.
For example, back in 1862, Lord Kelvin calculated how long Earth might have taken to cool from its original molten state.
All ordinary matter is made up of combinations of chemical elements, each with its own atomic number, indicating the number of protons in the atomic nucleus.
Additionally, elements may exist in different isotopes, with each isotope of an element differing in the number of neutrons in the nucleus.
Wars, attacks, raids, murders, rapes, crime, and anything imaginable from people to hurt other people. I have a bachelor in applied nuclear technology and a master in computer science but nothing beats my bass guitar.
Isn’t this exactly what happens in a prison full of criminals?