![Tunisian students hold flags and placards during a march in memory of 12 presidential guards who were killed in an attack in Tunis.](/sites/default/files/multimedia_images_2016/tunisia-protest-terror-attack.jpg)
Tunisian students during a march on December 23, 2015, in memory of 12 presidential guards who were killed in an attack in Tunis.
© 2015 Reuters
Tunisian students during a march on December 23, 2015, in memory of 12 presidential guards who were killed in an attack in Tunis.