This episode contains strong language. Federal agents dressed in camouflage and tactical gear have taken to the streets of Portland, Ore., unleashing tear gas, bloodying protesters and pulling some people into unmarked vans. Today, we go behind protest lines to ask why militarized federal authorities are being deployed to an American city. Guests: Zolan Kanno-Youngs, The New York Times’s homeland security correspondent, and Mike Baker, a Pacific Northwest correspondent for The Times.For more information on today’s episode, visit nytimes.com/thedaily Background reading: The federal authorities said they would bring order to Portland, after weeks of protests. But local leaders believe the federal presence is making things worse, and a backlash has grown since the deployment began.Protesters have used everyday home items, including pool noodles, to try to fight the militarized force. This is what our reporter saw on the streets of Portland.