Vox Day puts this quite succinctly.
You simply cannot expect to maintain civilization by giving barbarians responsibility for upholding their share of the social fabric. As the social scientists have discovered, much to their chagrin, the more diverse a community becomes, the less contact people wish to have outside of their race and ethnicity. This is not hard to understand, given incidents like these.
…and as an aside…
Where are the men? The only protest was from an elderly woman. I weep for the future present.
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