Masks don’t really provide anonimity (you’d need to accompany with anti-IR glasses to protect yourself from iris scans, and probably prostethics for your face as well as your legs to avoid gait recognition from camera footage), and they do nothing if you are grabbed by an ICEtard.

But yeah in the overall, I don’t really see a problem with renouncing them “officially” (just strike an X on the signature, you can later claim that that was not your signature and was forced under duress) and participating on the protests anyway. It’s not like lawyers are expected to not lie and trick their way out of things under capitalism anyway, so perhaps the students (and the faculty) should consider this as an extra period test.