Ivorian police clash with stone-throwing students Ivorian police use tear gas and stun grenades against stone-throwing students protesting education fee hikes outside the Houphouet-Boigny University in the country's economic capital, Abidjan. The students, who are protesting new fees ranging from 15 to 300 euros ($17-350) on top of existing registration costs, also disrupt traffic across the city. IMAGES AND SOUNDBITES