What we're seeing here is an epic battle between two competing visions for Thailand.

These youngsters are determined that their demands for reform off everything, including the monarchy, both heard and acted on and they're up against on establishment that is determined to keep Thailand stable.

Conservative with the monarchy and military at the very top Palm is a 21 year old student and now a familiar face of these protests.

Hers is a rowdy generation, informed and mobilized through social media.

Taking the hunger games salute their own symbol of defiance.

They they they want the king's power to be accountable on.

They want the freedom to speak out without the threat of Reprisals.

Mine What happened when you get that help him So one.

How do you want tea?

Party along, Mom, let me I'm not I'm not t come on me.

Oh, that I'm not A quantum began to Putin E o.

I won't make a football.

Thailand's monarchy is officially revered, but public attitudes are changing after the accession of Qinghua Chulalongkorn four years ago.

He's a very different personality from his much loved father, taking personal control of vast royal assets with tens of billions of pounds and taking command over some powerful army units.

Criticizing him, though, can be illegal and dangerous.

Over the over the past four years, nine activists have disappeared.

The bodies of two were discovered in the Mekong River.

Dozens of people linked to the protests have been arrested and charged with serious crimes, like the notorious Less Majesty Law under which you could be tried in secret and sentenced to decades in jail.

So unless this, though, has not deterred from here, Palmer's leading a letter writing protest to the king, bluntly demanding that he accept limits on his wealth and power.

Don't thank you, good Colombian bang by making these demands.

Though, they triggered a reaction.

Royal Ism has passionate adherence in Thailand on they've been mobilizing, dressed in the king's color to take on the student movement.

They're getting some help from the king himself, who, after spending much of his reign abroad, is staying home these days on a lot more visible.

Okay, Tommy the king has responded by abandoning his normally stiffened stern public persona on going on a syriza very high profile walkabouts like this one, allowing the Thai people to get really close to him for the first time.

They reach out to touch the royal couple for good luck.

We are but dust under the feet of the king is the tie, saying goes.

Among them is where on decade Vikram, a former politician who gets a personal word of thanks from the monarch for his pro palace activities.

He thinks using the toughest laws against the protesters is justified a little more challenging.

You were kind of positive and they could go and I took, too.

But tell me if I'm looking at from what I could and keep by that, uh, Queen Elizabeth.

But what A.

But that's just not true, because in Britain you can say pretty much what you want about the queen, and you won't go to prison.

It's very different from the situation here in Thailand, uh, loathe, have a custom equipment.

PH I come back on and he kept on make eye contact with Let me die.

But longtime radio, what could they could not like?

Maybe like that time they need some cords e didn't get.

Thailand's history has Bean peppered with protests, but none perhaps so inventive and so provocative is this generation, which refuses to be bound by Thailand's traditions of hierarchy and order.

Yeah, well, this is pretty extraordinary.

This demonstration has come right up to the gates of the Royal Palace, perhaps the most sacred location for Thailand's monarchy, by making demands of their king by insisting he changed his ways thes mainly young activists, opposing the kind of challenge that this powerful, untouchable institution has never faced before.

Thanks anyway, I'm gonna be good.

They were eventually allowed to deliver their letters in replica mailboxes that the king will probably never read them.

The police are threatening to prosecute the letter writers.

This is a battle over what it even means to be tie.

The king praises his loyalists for upholding what he calls true Tinus activists say that's nothing.

Not even his hallowed status is sacred.