There is relatively little stigma against cheating. Maybe in smaller seminars and classes with higher collaboration there is some, but much less so in large STEM lectures. Many of the incentives in classes where exams were online led to arms races and widespread cheating (without exaggeration, over 80% of the class). For instance, a certain math class I knew of had all grades based on remote and often asynchronous tests. Many people would cheat/collaborate and ace them, leading to the professor increasing difficulty (as scores were very high). This led to more cheating and so on. It got to the point where the problem sets had such difficult problems in this intro class that only a handful of people (who had taken advanced course work in high school) in the entire 100+ person seminar were distributing proofs for everyone else. Really not great dynamics all around and it's worth noting that my school does not have a reputation for being ones with an especially competitive and cutthroat culture.

He appears to have attended the same undergraduate program in Portugal as the MIT professor.

Therefor it seems possible that these shootings were carried out of personal resentment, though only he knew for certain.

But then I moved to Denmark from that cold place and found myself very happy! Of course circumstances change and a single account means little but I definitely believe some societies lend themselves to greater happiness than others, even in the very developed world.

"Mid-tier cities" are great too and have rich social fabrics if you look for them as well!