Swami Swarupananda, Srimad Bhagavad Gita (1909)
[4]By the evils of those who destroy the family and cause the intermixture of castes, the eternal laws of the caste and the family are destroyed.
BG 1.42
दोषैरेतैः कुलघ्नानां वर्णसंकरकारकैः। उत्साद्यन्ते जातिधर्माः कुलधर्माश्च शाश्वताः॥
doṣair etaiḥ kula-ghnānāṃ varṇa-saṃkara-kārakaiḥ / utsādyante jāti-dharmāḥ kula-dharmāś ca śāśvatāḥ
"Every pillar of social order that took generations to build — destroyed in one war."
3 translations · all pre-1928 or released to public domain · sources
By the evils of those who destroy the family and cause the intermixture of castes, the eternal laws of the caste and the family are destroyed.
Through the sins of those who destroy a family and cause the intermixture of castes, the eternal customs and duties of the caste and family are subverted.
By the offences of those who destroy the family and cause the intermixture of castes, the eternal laws of caste and family are ruined.