An anti-vaccine protester throws a flare during a rally, at the northern city of Thessaloniki, Greece, Saturday, September 11, 2021. While Greece's Prime Minister, Konstantinos Mitsotakis was touting the achievements of his government despite the pandemic emergency, some 3,500 vaccination deniers clashed with riot police near the venue. (Photo by Giannis Papanikos/AP Photo)
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