Originally Posted by
Gurbz
The problem with the Culling of Stratholme was that Arthas called for the death of every person in the city because they MIGHT be infected. This wasn't shown very well in the CoT instance. Actually it wasn't shown at all. But he killed every man, woman, and child in the city, for no reason other than there was a chance that they might come back as undead. On top of that, they were civilians with no chance of defending themselves getting cut down by trained soldiers of their own government. THAT was the part that Uther and Jaina objected to, and what made his decision so terrible. There were better ways to accomplish the same goal.
In the Purge of Dalaran, at least Jaina only had us attack those who were actively resisting. Everyone else was imprisoned but not harmed. Still not morally perfect, but not comparable in any way to the Culling of Stratholme.