It is not that simple, there is a lot of nuance here. I suggest a study of Samkhya (https://en.wikipedia.org/wiki/Samkhya https://en.wikipedia.org/wiki/Samkhya

It is not that simple, there is a lot of nuance here. I suggest a study of Samkhya (https://en.wikipedia.org/wiki/Samkhya https://en.wikipedia.org/wiki/Samkhya) whose Worldview is the basis that has most influenced the worldviews of the other systems within Hinduism. Kali/Vishnu/other popular Hindu gods are later conceptualizations meant for Popular culture. The Intellectual culture behind it is quite different. Samkhya defines the Purusha (consciousness) enjoying Prakrithi (everything else) through the interplay of three Gunas (characteristics). The imposition of a Worldview on a Social Structure is what defines Morality/Ethics/Values. Here is where "Ahimsa" i.e. "non-violence"(https://en.wikipedia.org/wiki/Ahimsa https://en.wikipedia.org/wiki/Ahimsa) comes into play. You don't condone "cruelty" but are fully aware of its existence (in the interplay of the gunas) and take measures to control it. Kali is one of those concepts who destroys evil by any means but herself is not evil. The idea is similar to Wrathful Deities (https://en.wikipedia.org/wiki/Wrathful_deities https://en.wikipedia.org/wiki/Wrathful_deities) from Tantric Buddhism.