The author, a former Google DeepMind employee, explains why they left the company due to its involvement in the immigration enforcement supply chain and its decision to sign a military AI deal without restrictions against killer robots or mass surveillance. The author had attempted to mobilize other AI luminaries and Google executives to take a stand against these actions, but was ultimately unsuccessful. The author's decision to leave was motivated by a desire to uphold their personal ethics and values. The article highlights the challenges of promoting ethical AI development in the face of corporate and government pressures.