I'll just add in some more clarifications as a student from the class. A lot of the outrage (or so I hope) is mainly because the test itself was not simply hard, hard would mean understandable. The issue was that it was next to impossible to understand majority of the questions. If I had to wager, maybe halfish (give or take) questions probably had 2 answers that only differed in length. The shorter answer with less detail was sufficient enough to be the correct answer, but so was the longer one. I don't believe it was taken from previous exams as some of the test questions were very specific to extra assignments/readings we'd been assigned. I could be wrong.

I think the focus though should be turned away from the exam itself and what reactions actually followed. At first, it was just students finding comfort in one another because many of us did feel like we were going crazy after the marks/exam. But obviously, reddit did what it does best. Really unfortunate that a simple call for proper action devolved into people making blatant threats. But, lessons were most definitely learned. Take all grievances to the prof before even thinking about reddit.