I learned a lot from this article and I'll attempt to provide a short summary:

We are living in an era where the movements for land back and for solidarity with Palestinians, Sudanese, Congolese, Ukrainians, Hong Kongers, Tibetans, Uyghurs, Kashmiris, etc. are becoming more and more popular.

Since our taxes and electoral systems are designed to fund and reinforce these systems of genocide how can we support voting with a clear conscience when we know that our vote legitimizes the existence of the same entities perpetuating these genocides? How can voting be called harm reduction when our vote is for normalizing the existence of genocidal states like the US?