Oh! That's sad!
My guess - either someone left a small child alone in their workshop (big mistake), or a very, very disgruntled employee on his last day.
There's one BNC that looks like it was attacked with wire cutters, which makes the 'small child' version a bit less likely.
I suppose there's also 'someone forgot to take their meds'. That the neat cross cut on the screen isn't centered seems to suggest 'adult, but diminished rationality'. Someone sanely making a point would have done a full-screen 'X', you'd think. Also probably opened the case and really finished the job.