https://www.gannett-cdn.com/presto/2018/11/26/USAT/8edf68f8-3dca-4430-b496-8a0a7aa0000f-AP_Central_America_Migrant_Caravan.jpg

tear gas forbidden in war but legal to use on civilians (and migrants)

A migrant wipes his face after U.S. border agents fired tear gas at a group of migrants who had pushed past Mexican police at the Chaparral border crossing in Tijuana, Mexico on Nov. 25, 2018. . ... Uncertainty grips migrants waiting in Tijuana following tear gas incident . ..

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