I know several people that get really angry when they are subjected to a movie with this in it.
A few weeks later I was watching I Am Legend in the theater, and when (spoiler alert) I could see what looked like the inevitable demise of Will Smith's dog, I hoofed it out as quickly as I could. I was completely unprepared to deal with that, and to this day I've never finished the movie.
I'm sorry you had to have your dog put down. It's an awful decision. When my parents decided to do that for the dog I grew up with, I really hated them for awhile. I didn't have a dog for a long time after that, but now I have a one year old Shiba, and I dread the day when I'll have to make that decision. Hopefully that won't be for a long time from now.
That may seem a morbid thing to think about, but everything happens for a reason ... circle of life and all that.
[1] https://www.theatlantic.com/magazine/archive/2015/09/the-cod...
[2] http://www.slate.com/articles/double_x/cover_story/2016/09/w...
Additionally, the first article linked is one of the worst long-form stories I may have ever read. It's scattered, making a claim and then jumping to another without justifying it in any way, shape, or form. This is the furthest thing from being scientific, and having looked at the authors, I see why. One is "president and CEO of the Foundation for Individual Rights in Education" and the other is "Jonathan Haidt is a social psychologist at New York University Stern School of Business and the director of Heterodox Academy". The Heterodox Academy is a right-wing group trying to de-left college campuses via bullshit propaganda. They don't care about diversity of views, they just want college kids to take up their antiquated mantle.
Regardless, there may be something harmful that comes from the (over)abundance of trigger warnings, and there may have even been some science along those lines, but it certainly isn't present in or referenced from these links.
You can say what you like about Jonathan Haidt but he's a credited psychologist who's simply going to know more about this subject than you do (or what that troll in the 3rd link did). Your assessement of Heterodox Academy is also, itself, bullshit propaganda of the worst order. (1) I don't believe Haidt is actually right wing. (2) Social justice is a fringe thing on the left, not all (probably not even most) liberals actually subscribe to it (see Bill Maher). (3) They're not trying to "de-left" colledges, they're trying to ensure colledges remain a place of debate and sharpening of ideas instead of pandering to spoiled helicoptor children. (4) The statement "They don't care about diversity of views, they just want college kids to take up their antiquated mantle." is a bold face lie. Please edit your post to remove this, or I'll be forced to conclude you are a liar.
I don't think Haidt is some sort of evil troll, are you sure you've really listened to him?
Most of the time when harm to a child is depicted in a film or television show, it is sort of a cheap, unfair way to get at the viewer's emotions.
What is suggested here is nowhere near the same thing as having a "safe space" which restricts the speech of others.