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'Use of water cannon in riot control contexts can lead to injury or death,[2] with fatalities recorded in Indonesia (in 1996, when the cannon's payload contained ammonia),[3] Zimbabwe (in 2007, when the use of cannons on a peaceful crowd caused panic),[4] Turkey (in 2013, when the payload was laced with "liquid teargas"),[5] Ukraine (in 2014, with the death of activist and businessman Bogdan Kalynyak, reportedly catching pneumonia after being sprayed by a water cannon in freezing temperatures)[6] and South Korea (in 2016, when a 68 year old farmer died after injuries sustained by a water cannon the previous year).[7] Water cannons in use during the 1960s, which were generally adapted fire trucks, would knock protesters down and on occasion, tear their clothes.
On 30 September 2010, during a protest demonstration against the Stuttgart 21 project in Germany, a demonstrator was hit in the face by a water cannon.[8] Dietrich Wagner, a retired engineer, suffered damage to his eyelids and retinas[9], resulting in near-complete loss of his eyesight.[8][10] Graphic imagery was recorded of the event, sparking a national debate about police brutality and proportionality in the use of state force.
According to a report issued in the United Kingdom[citation needed], using plastic bullets instead of water cannons was justified because the latter "are inflexible and indiscriminate", although several people had previously been killed[11] or seriously injured by plastic bullets.[citation needed]'