Civility is reserved for the civilized.
The lack of civility in our society is due to the number of uncivilized people in it, whether raised here, imported, or invading.
It's also tied to mental defect, where the same thug who'll murder someone for "dissing" (disrespecting) him, will meanwhile fling feces at everyone they can. That psychopathic incapacity to connect what they do to others only gets worse.
I agree, but at least I wish the mechanisms to make people persona-non-grata for their behavior should be in place.