I suppose if he hadn't been restrained so hard and managed to reach for and use a concealed weapon to kill the policeman you'd be alright with that?
You're talking absolute nonsense and making yourself look rather silly.
You don't need to effectively strangle someone to stop them "pulling a weapon", there are things called handcuffs (you may have heard of them, even though they've only been around for a few hundred years) or even your own hands and those of the other two of three officers who were there, and how the hell does kneeling on someones neck stop them from using their hands?
If this started in the UK the transport police wouldn't be able to do anything, they aren't on the tracks, they get called to a station if there's a fracas on the train. Anything happening between stations and they aren't doing anything.
The trains aren't parked, they are just very slow moving so people are just jumping on. Physical security is pretty impossible, only thing they can do is seal the containers better than they have been.
One of the things that shocked me when I saw a bit about it on the news the other day was that apparently a lot of the containers are secured using nothing more than cable ties.
The Amazon lockers by the checkouts at several of my local stores have better security than that, on every single locker from the 30cm by 10cm ones up, and they're inside a secure building, next to the checkout operators.
Why the hell are shipping containers being sent overland with little or no external security getting away with being sealed with something you can break with a pair of scissors.
I can understand the reasoning when on a ship at sea where Customs are going to want to check it at the port of entry, but whilst on trains, it's just nuts.
A £100 suitcase often has better security than the containers.
I mean I can sort of understand that there are issues with proper locks and containers that might be moving between loads of locations, but in this day and age the technology is there to make an electronic lock (or even just put a barcode on a good combination lock so the staff member booking it in scans it and gets a code pulled from an app) that you point a terminal at during after delivery and it either unlocks it, or gives you the code to do so. Amazon lockers already do this, so it wouldn't need much more than commissioning a half decent lock and with an electronic locking mechanism, you could even save money per lock by have it powered by the terminal (or portable battery) if you wanted to cut the cost of producing the locks (as you'd need to allow for either recharging or replacing batteries anyway).
You'd still have to arrange for the locks to be where needed, but that's a lot easier than moving the locks and the keys together and more secure than using a handful of default keys (and for companies like amazon, shifting a bunch of locks between distribution points to maintain enough spares should be simple).
The daft thing is, that you don't even have to make the containers much more secure, just enough that you can't get on, and gain entry to them with just a pair of wire snips (or boxcutter) in a few seconds, do that and increase the security a bit around the train yards when these trains are due in and you'll probably see most of the criminals give up fairly fast as it goes from being a potentially high reward very low risk crime, to being a higher risk and lower reward one.