Hi GeeKay
Difficult to know what sector you are in, but I doubt that you will find something that meets what you are looking whilst also delivering what you say you need.
Lots of short videos on LinkedIn (and other social media) about things going wrong but they usually fall into either of two types:
(a) something disastrous that happens in a "low probability, high consequence" scenario so in the last few days I've seen something allegedly purporting to be a lightning strike on chemical storage that then goes bang dramatically.
(b) some.thing showing that very basic precautions haven't been implemented - a typical example would be a video of someone at the bottom of a deep unsupported excavation that then collapses and either engulfs the person or they are lucky to still be alive. Often these videos come with the message "it wouldn't happen here" - there was one circulating recently about the escape of people including children from a goldmine in Africa when there was a hillside collapse
There are also lots of training courses available which also tend to fall into two types:
(1) someone has regurgitated the advice in e.g. HSG245 but WITHOUT making the training bespoke to the audience, so as to reflect what their organisation's procedures require.
(2) packages that are essentially a sales pitch for some proprietary cause analysis product.
My suggestion would be pictures of something that YOUR audience can easily relate to, whether that is because the pictures show something that is similar to the work that they do or because it's the sort of thing that they can easily see when just walking around the streets.
Construction has a bad name in health and safety but that is partly as many of the issues can be seen from outside the site fence (assuming there is a site fence!!).
So, as example when I was putting together a training package on incident reporting investigation for one of our clients, one of our team just happened to be around the corner when a scaffold partly collapsed in Milton Keynes and she was astute enough to take a photograph of the aftermath from a distance.
You could find this incident and a pic on the internet [I have done so today!] but just about anything is likely to be copyright.
So, easy for just about ANYONE to understand and I have used that photo repeatedly to explain the importance of not starting an investigation until the scene is safe to do so, EVEN if that might mean that the evidence may become less clear.
The other problem is that what you can buy tends to see things in simplistic terms - it's safe or it's not safe, but health and safety is almost always about doing what is reasonably practicable - usually we are in the grey area.
So, going back to that excavation collapse there used to be a "rule" that said that if the trench was less than 4 feet (1.2m) deep then it didn't need to be supported and if more than 4 feet deep it did.
But even when that threshold was in place there were lots of qualifications both above and below the magic number!
So, suppose you dig a trench in "London Clay" (which you can find well beyond London) on a greenfield site you could probably get down to 8 feet depth without much risk of collapse........
.....until you change the scenario only slightly - park an excavator close to the edge and thence increase the loading or leave the excavated materials close to the edge, and thence....ditto
.....or it's actually a brownfield site and there are lots of underground services just behind the face of the excavation so the London Clay has been previously disturbed.
But if you are in more typical ground conditions the excavation could collapse when still much shallower. 3 foot deep, with person making pipe connections - quite enough material to bury them. Whatever message those posting may have been trying to send - this could and does still happen in the UK.
So, my suggestion is to use materials YOU understand. The actual incidents or the ones that you can see could happen, possibly even staging something.
Remember that defective stepladder that was consigned to the skip last week. Get the gloves on, take it back out and get some photos of what might be about to happen!
To possibly help set the scene, in the first fatal accident arising from a fall from height that I ever investigated, the victim was a painter who fell may be 6 feet when the defective stepladder he was working on collapsed in a bingo hall and he hit his head off a work surface.