re: #212 Dark_Falcon
Given the crowded nature of the galaxy they found themselves in when they developed FTL capability, the only choices for the Tau if they wanted to expand were colonialism or genocide. What makes the Tau “least evil” is that they very much prefer the former to the latter.
You also have to take into account the Tau also are severely casualty averse and prefer nonviolent solutions, such as brainwashing, economic warfare, pheromone manipulation and other methods.