Khalid Albaih is a political cartoonist from Sudan. In our interview, he talks about why he called himself an internet artist, how algorithms censor, why cartoons are important contemporary documents – and why they really don’t have to be funny.

Humour can be a powerful and non-violent tactic for protesting against authoritarian regimes. It has been used effectively in countries from Serbia to Thailand.

Around the world, satirists draw, write and film for freedom, often under repressive conditions. But not every political joke promotes democratic values: Extremist forces use humour for their ends, too.