In this photograph taken Saturday, Jan. 11, 2020, protesters hold flowers as tear gas fired by police rises at a demonstration in front of Amir Kabir University in Tehran, Iran, to remember victims of a Ukrainian airplane shot down by an Iranian missile. On Monday, Jan. 13, 2020, online videos purported to show that Iranian security forces fired both live ammunition and tear gas to disperse demonstrators protesting against the Islamic Republic's initial denial that it shot down a Ukrainian jetliner. (AP Photo)
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