The injury occurred on Saturday, but they didn't tell anyone until he was taken by ambulance to a doctor on Sunday. The news media were busy debating among themselves what toppings Joe might prefer on his pizza and didn't bother to ask anything. The real question is whether it was "Dr." Jill or Kamala who may have administered the shove.
Most of us who have had a family member with dementia probably can remember how unsteady they were on their feet. My father had trouble with depth perception, and was uncertain as to where to place his foot for the next step - and yes, he fell a few times.