Strict lèse-majesté laws in Thailand make it a crime to criticise, defame or insult members of the royal family. Any Thai can open a case, which can see people jailed for up to 15 years on each count.
In practice, this means any open discussion or critical reporting about the royal family is considered illegal.
The military junta, which took power in a 2014 coup, has been criticised for using the law to stifle political opposition.
In 2015, a man was jailed for 30 years over six Facebook posts and the local printer of the New York Times refused to publish an edition with a story on the king.