Cultures are easily destabilised when large influxes of people with a different cultural heritage enter into a community or nation.
The level of destabilisation is enhanced when the immigrants, look different, dress different, are of a different religious faith, and speak a different language.
For this reason, it is important to control the numbers and ratios of incoming immigrants at a national and regional level to preserve the internal stability of the host communities.
Internal stability can further be exacerbated when large numbers of these immigrants who are unable to find work, either have to live off social security or become a source of cheap labour which undermines the prices that the local people charge. All these factors produce tensions that can threaten the internal stability of a community.
Chapter 24: Societal Mastery