Unfortunately while adults may be largely free from the physical violence, workplace bullying does occur. Usually it is more subtle than the outright taunting and physical violence of schoolyard bullies, which means its harder to retaliate against but it can be very stressful - and HR is not on your side.
"Currently kids grow up for 18 years in a everyone-for-himself, in-order-to-be-successfull-you-need-physical-strength-and-iron-will world,.."
Sadly, the only other system I can think of that shares these traits is one called "prison".