If you did, you might actually understand the point I am trying to make
At the moment, you are missing parts out to try and better your own argument.
There are several points I am trying to make, the first of which is that it is difficult to move someone who is having a fit. It isn't as simple as:
You can see the gards trying to lift him and they are struggling because of the unpredictable way his body is moving. They should have more assistance with it, but they don't. Not from other gards or from the other protesters.
From watching the video multiple times, it seems that they felt he was being difficult and then, when they realised that he was actually having a seizure, left him alone, gave him space, and put him in the position he needed to be in, as you've said they have been trained to do:
Trying to put someone having a fit in the recovery position is difficult. Reassuring them doesn't always work unless you actually know the person. Often it can aggravate the situation, as I've seen.
What I'm saying is that, yes, it could have been dealt with better, but I don't see this as brutality. It did take a while for them to acknowledge that this wasn't an act of violence from the man and was actually a fit, but when they did they acted accordingly.
From reading your posts, it isn't clear if you wanted them to continue clearing the road or tending to the man having the seizure. As you've pointed out that there weren't enough gards to deal with the situation, which is better?
I still believe that moving him was the best action at the time, given the brief amount of knowledge they seemed to have on the situation. If they'd have left him, people would be crying negligence for leaving a fitting man in the middle of a road.