antivivisectionists among Modernity's earliest, loudest critics - supporters of microbial intelligence among its last, quietest ---- and most effective

Life-saving doctors killing and inflicting pain upon the weakest of sentient beings (animals) in the interests of "Science" began in the 1850s with Claude Bernard.

It thus well proceeded life-saving doctors doing the same to the weakest of humanity (the poor, weak and minorities) in the name of "Eugenics" beginning in the 1910s.