> It's similar to what happened in Europe in the last few years, now it's business as usual when soldiers in full gear + assault rifles patrol the streets in ma

> It's similar to what happened in Europe in the last few years, now it's business as usual when soldiers in full gear + assault rifles patrol the streets in major cities or during big public events I've not seen a lot of that.. More at US Christmas markets. At any rate, I view policing events in that fashion or China adding security guards for their knife attack problem as not actually the same as US schools. In most cases the perpetrator is an adult that is dropping out and hard to reach. The US is worried about youth going through their social integration system who become violent as a result and that it apparently doesn't catch deteriorating preemptively as much as other societies. Many arguments can be made as to why, i.e. a litigious society leads to little personal risk to address abnormal problems. A child who goes to a US school and observes the precautions should become paranoid about trusting themselves and their friends not to go on a killing spree. A child going to a Chinese school should mostly be more afraid of a scarier world.