Teachers have a difficult job as it is, not to mention that they are already mistreated - they have almost no authority over students since they never have backing from parents or school administrators.
I recently came across a post on Reddit[1] where a student pepper sprayed her teacher because he confiscated her phone during an exam. One of the commenters claimed that the same teacher was previously punched in the face by a different student for taking their phone away after catching them cheating on a test. It is disconcerting to say the least.
[1] https://www.reddit.com/r/facepalm/comments/1397n4l/teacher_t...