When I teach, I rely heavily on interactive methods. I don't know how else I can teach. In my experience teaching both (in-person) undergraduate courses and graduate seminars, I've encountered a new kind of situation that's becoming more and more common: I had many students showing strong resistance to verbal participation in class, even when gently encouraged.
Over the past two years, this has escalated to the point where four students have filed formal complaints, specifically citing discomfort with being called on directly in class and claiming a "right to not speak".
While I understand some students may feel anxious about speaking up, I worry that complete silence defeats the whole purpose of in-person learning. Indeed, I think the idea of "right to not speak" will be laughed at just 10~20 year ago. But maybe the cultural norm as changed...
My question is: Now, is it still ethically okay to require in-class participation? Or is there any new ethical issues we should consider?
Note: I'm not asking about any specific university's policy. I'm quite familiar with my own university's guidelines. I'm asking more about the current cultural norm.