Sudanese protesters run away from tear gas during a demonstration in Khartoum, Sudan's capital, on December 31, 2018. Sudan has detained several opposition journalists amid the ongoing protests. (AFP)
Sudanese protesters run away from tear gas during a demonstration in Khartoum, Sudan's capital, on December 31, 2018. Sudan has detained several opposition journalists amid the ongoing protests. (AFP)

Sudan detains several critical columnists amid protests