We've been conditioned by TV and Movies, old John Wayne movies
an the like, to think people can take blows to the head all day
long and just get up and walk away.
Truth is, any hard blow to the head from a fist or sidewalk
or something similar can be potentially fatal.
There have been many other boxing match fatalities besides the
two I mentioned, and they were all gloved matches.
A hit to the back of the head can be extremely dangerous,
that is why they are strictly prohibited in boxing.
If parents knew how many children die or are seriously injured
from falling off their bicycle and hitting their head they would
never let them ride without a safety helmet.
There have also been many people killed in what they thought
was just a fist fight, and the other person charged with murder.