Many flights were cancelled in Kenya on Wednesday, grounding thousands of passengers, as aviation workers were out on strike. The strike was initiated following a proposal to have Jomo Kenyatta International Airport manage the airport, instead of the current management team. Riot police were summoned to end the strike- bringing clubs with them and arresting union leaders. Breaking up the strike was a priority for the government, as Kenya relies heavily on tourism.
See "Flights resume after strike at Kenya's main airport grounds thousands of passengers", Thomas Mukoya & Omar Mohammed, Reuters, March 6, 2019