Chadian police use tear gas to protest against government | Chad news Military authorities banned the so-called protest by a coalition of opposition political parties and civil society organizations. Police in the Chadian capital N’Djamena fired tear gas last month to disperse crowds protesting against a post-death military checkpoint on President Idriss Deby’s long battlefield. The transitional military government – Deby’s son, led by four-star general Mahamat Idriss Deby – on Friday banned a protest called by a coalition of opposition political parties and civil society organizations seeking to lead a civilian transition. Defying the ban, groups of protesters took to the streets on Saturday morning, waving slogans and flags. Some had printed messages denouncing what they called a “monarchy”.