detailed look at how it's being used detailed look at how it's being used This is a human rights violation detailed look at how it's being used Washington Post police are using tear gas on protesters tear gas that's been banned banned in international warfare tear gas that's been banned detailed look at how it's being used banned for use in warfare police are using tear gas on protesters detailed look at how it's being used detailed look at how it’s being used detailed look at how it's being used