Thai protesters hauled large red postal boxes over a police barricade in order to deliver letters to the king on Sunday night (November 8).

Large crowds marched to the Grand Palace in Bangkok, Thailand, to hand over a letter addressed to the king, which called for political reforms.

However, on the way to the historical building used by the Royal Family, a police barrier of vans and buses blocked the roads.

Protesters began attacking several vehicles and clambering through the buses. They also stop on top of them before they were doused with water cannons.

Crowds later dispersed after using large red post boxes pushed over the vehicles to deliver the letter.

The two groups, Free Youth and Free People, who organised the demonstration at the Democracy Monument, said King Maha Vajiralongkorn should listen to their view.

''If your words, 'We love them all the same,' are true, you should accept letters from everyone, not just those in yellow shirts who shout 'Long live the king.' Treat everyone the same," the groups said in a statement.

Youth-led student protest groups backed by activists and disaffected opposition parties are calling for constitutional changes that would limit the power of the government. They are also calling for reforms of the monarchy.

The protests calling for greater levels of democracy have erupted across the country over the previous three months.

Thai protesters hauled large red postal boxes over a police barricade in order to deliver letters to the king on Sunday night (November 8).

Large crowds marched to the Grand Palace in Bangkok, Thailand, to hand over a letter addressed to the king, which called for political reforms.

However, on the way to the historical building used by the Royal family, a police barrier of vans and buses blocked the roads.

Protesters began attacking several vehicles and clambering through the buses. They also stop on top of them before they were doused with water cannons.

Crowds later dispersed after using large red post boxes pushed over the vehicles to deliver the letter.

The two groups, Free Youth and Free People, who organised the demonstration at the Democracy Monument, said King Maha Vajiralongkorn should listen to their view.

''If your words, 'We love them all the same,' are true, you should accept letters from everyone, not just those in yellow shirts who shout 'Long live the king.' Treat everyone the same," the groups said in a statement.

Youth-led student protest groups backed by activists and disaffected opposition parties are calling for constitutional changes that would limit the power of the government. They are also calling for reforms of the monarchy.

The protests calling for greater levels of democracy have erupted across the country over the previous three months.