IMAGE 01[spoiler=Image]

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I was looking at the first image for clues; it's probably the most information-laden one.
[spoiler=Flogging]We have figures dressed in red, and in the case of the apparent local leader of this group, red and white (or are they simply brown with red hoods? The lighting is a bit weird, and I'm red-green colorblind). What looks like a public flogging is in progress, with a very serious three-tailed whip in use. The robed figures have covered faces, so their humanity can't be confirmed that way, but they do have human-looking hands and arms.
Their victims are almost certainly indistinguishable from humans, though I can't really discern what that metal-looking device that seems to span the shoulder blades of the one being actively flogged is. The victim on the left might be wearing nicer clothing with a high collar, but I can't tell what those little spikes things coming out of his back are.
Some other details about the robed figured worth mentioning -- the insides of the cowls are a little too dark for the level of ambient lighting in this scene. That might just be an artistic choice, but it might be supernatural. Whatever it is, it feels like they're hiding their faces, if for no other reason than intimidation. Also worthy of note is the (silver?) cross hanging from the flogger' neck. That suggests this is a form of religious persecution.[/spoiler]
[spoiler=Scenery]A fire rages behind and to the sides of the raised (metal, since it's not burning?) platform on which this is taking place, and yet the crowd seems largely unconcerned. That suggests the fire is a part of the demonstration, supported by the lead flogger seeming unconcerned with the fire licking at his cloak. The air is thick with smoke, so they're burning something, not just a clean, powerful fuel to create dramatic fire. Could be books, or corpses, or anything else.
The building on the left seems completely intact, but the ones on the right in the background seem maybe a bit burnt out? It's hard to tell from this distance, but the fire might be larger than just the flames we see in the foreground. However, the sky doesn't have any red hue to it, so I'm less inclined towards that theory. Also, the crowd looks largely civilian, though I definitely can't be sure about that -- there's no one in the crowd who really looks like they couldn't possibly be at least a mercenary -- but it would suggest that this is a crowd of people who live in that city to the right, and they wouldn't be collected here so calmly if their homes were burning.
The banner on the building to the left looks like it reads (3E)][-<ivKF".N' ... which is obviously nonsense, but assuming it's a banner, it might be language. I might try to compare the characters I see here with known Cera Bella languages, though the [-< symbol looks more like a pictograph than an alphabetical character.
The last remaining point is the architecture of the building on the left. It looks imposing and dark, but I don't know a thing about determining time period from architectural features, so if someone knows a bit about that, identification of any notable features would be helpful. Anything style can tell us about geography or culture would be helpful, too.[/spoiler]
[spoiler=Crowd]Now for the crowd.
[spoiler=Leather-Masked Figure]The person on the far left looks like they're wearing some sort of leather hood/helmet/mask, with a tube in the front -- with the way it's pieced together, it resembles a primitive gas mask. But that's not even the weirdest thing about this one. If you look closely, you'll see a couple of little bright orange circles. That's the fire in the background.
You're seeing through this person's head. Also, note the copious head-spikes. Kinda weird.[/spoiler]
The next person to the right looks pretty male, and looks nicely dressed, with some kind of weird dramatic collar-like thing at his neck. I think he's wearing a headband, or maybe just a bandage for a head wound?
[spoiler=Spikes]The next person, towards the center, looks female with short hair, but could easily be male. Wearing a yellow coat? With shoulder plates and spikes. Looks kind of mercenary. Has a nice shoulder-slung satchel with a steel(?) buckle. But the elephant in the room is that they have spikes in their hair. Does this mean they're not human? Those little bald patches -- are they spots where the spikes have fallen out or been removed? Do they have anything to do with the other spikes we see in this scene?[/spoiler]
And on the far right, two women, one in dark blue with very elegant patterns on the back, and one in plain light blue.
[spoiler=Cone-Hooded Priest(?)]A bit further ahead in the crowd, on the left, we see someone wearing a hood that presumably marks him as of the same order that the floggers on the platform are from, and at least as high-ranking as the one administering the beating; he gets a pointy hood, while the underlings on stage have more subdued hoods. On his back is probably the insignia of the order: a very wide and short rectangle, connected by a short line to an equally wide circle. Of course, it might not be their symbol, but it could also be a symbol of rank.[/spoiler]
On the right, about the same distance forward, is a man in a yellow-and-red... poncho(?). At the very least, this tells us that those exist in this world.
[spoiler=Other Spikes]And at the forefront of the crowd, we see two more figures with head-spikes or horns. One's pairs are curved, while another's pair is long and straight. These may be helmets, or they may be directly protruding from their heads, like with the central figure in the back. However, these symmetrical horns they bear look quite different from the asymmetrical little nubby spikes on the figure in the back, so they're probably not the same phenomenon.[/spoiler]
The last figure is all in white, and may have the same kind of headband as the second one in the back. The rest don't appear significant.[/spoiler]