Indian workers in South Africa broke caste through intermarriage and relationships.

Evidence

In fact, they did not need ‘leading’. For years before, during and after Gandhi, they had waged their own heroic resistance. It could be argued that they were fortunate to have escaped Gandhi’s attentions, because they did not just wage a resistance, they also broke caste in the only way it can be broken—they transgressed caste barriers, got married to each other, made love and had babies. — Ambedkar, B R, Annihilation of Caste_ The Annotated…, 262

Categorization

• XREF: Powerful for the reader’s caste-annihilation through-line — intermarriage as caste-erosion mechanism echoes what Ambedkar argues for India. — connects to: Britain imported then forcibly repatriated Asian laborers in South Africa.
• SEED: Could ground an essay on caste breakdown happening through everyday transgression rather than top-down reform.
• corroborated: 2 independent passages support this claim — Ambedkar, B R, Annihilation of Caste_ The Annotated…, 262