People are in hospital because they are sick, sometimes dying, often confused and very scared.
If you are privileged enough to never have been in for anything serious that effects your mental capacity then you dont really get to judge but it usually happens to everyone eventually.
When I was 4/5 year old I was rushed in for poison control and had to have my stomach pumped + a whole bunch of testes.
I managed to injure 5 different nurses through biting and scratching who where trying to pin me down to get needles and tubes into, it took about 12 people in the end to over power me enough to complete it.
Don't underestimate the strength of a confused and terrified child who doesn't understand why adults are hurting her and repeatedly stabbing her with sharp things.
At the same time surely you can understand WHY people in that scenario fight back though?
It certainly wasn't because I'm a horrible reprobate who just hates nurses and shouldn't be allowed in society.