The cases where people are asking for classrooms to be "Safe Spaces" the way you're describing them are the minority. Most people are asking for exactly what y

The cases where people are asking for classrooms to be "Safe Spaces" the way you're describing them are the minority. Most people are asking for exactly what you're suggesting - provide warnings for people that might need to remove themselves, but have uncomfortable discussions in the classroom. The whole idea of a "trigger warning" doesn't work any other way. At Mizzou, they demanded a separate "safe space" because they were literally being sent death threats, which is a separate way to use the idea, and which, in the light of the past week's events, were not unwarranted.