Why the Liberation of Animals is One of the Defining Ethical Question of our Era

My aspiration is to map out a logical, rational and ethical basis for why I consider veganism to be an urgent and pressing issue in 2020, and why the emancipation of non-human animals more generally represents one of the great moral questions of our time. I see there being three predominant bases for why people ought to consider eliminating animal products from their diet:

1. Moral/Ethical

2. Environmental