https://en.wikipedia.org/wiki/Ethnic_cleansing

> Ethnic cleansing is the systematic forced removal of ethnic, racial, or religious groups from a given area, with the intent of making the society ethnically homogeneous. Along with direct removal such as deportation or population transfer, it also includes indirect methods aimed at forced migration by coercing the victim group to flee and preventing its return, such as murder, rape, and property destruction.

Ethnic cleansing is a completely accurate description of "remigration". It invokes strong emotions because the act itself is wrong.