I see a parallel with what is happening with police and what is happening with teachers. Both are being asked to do too much. This brings a certain meanness into them.
Look at how we grade kids. It is divisive. Some deep kind of dark principle, the same one that divides cops from the people they are supposed to protect, is starting to be exposed in education, a dark principle very much connected to the way we teach and assess that also divides teachers from the children they are supposed to teach.