Look into dehumanizing language used by political leadership over history and where it tends to lead. Especially when paired with extremist, evil policies like remigration.
Explain why remigration is 'extremist' and 'evil' when applied to those who refuse to assimilate and/or integrate into their host societies, who never learned the language of those societies, who express disdain over those societies, who claim their own culture is superior and will prevail, who never became self-supporting but continue to depend on the state for their upkeep? Let alone those who commit crimes?
I'd say it is those people who are extremist, not the host societies who are fed up with hosting unwelcome guests.