Culminating days of fierce resistance against plans to drill for Arctic oil, activists in Seattle on Monday are risking arrest as they attempt to shut down operations at Shell Oil\u0026#039;s drilling rig.In the wee hours Monday morning, hundreds of people stopped traffic on the Spokane Street Bridge before marching to the Port of Seattle where protesters blocked the entrances to Terminal 5, which houses the oil giant\u0026#039;s floating rig, the Polar Pioneer.A coalition of local environmental organizations, known as the\u0026nbsp;sHellNo! Action Council, have for days been holding nonviolent training seminars in order to prepare activists for what is being described as \u0022the largest act of environmental civil disobedience Seattle has seen in recent years.\u0022 Among those risking arrest is Seattle city councilmember Kshama Sawant.\u0022Today we’re not just shutting down Shell, we’re challenging corporate capitalism, imperialism and colonialism with a vision of people power and true mass democracy,\u0022 said Ahmed Gaya, an organizer with Rising Tide Seattle, one of the groups participating in the council.KPFA is live-streaming the direct action here and Seattle alt-weekly The Stranger also has live coverage throughout the day. Other updates are being shared online under the hashtags #YouShellNotPass and #sHellNO.#youshellnotpass TweetsThe demonstration follows days of protest targeting Shell\u0026#039;s Arctic oil campaign. On Saturday, hundreds of people in kayaks and other small boats paddled into the Puget Sound to square off with the newly-arrived rig.Among the groups who have added their voices to the growing chorus of protest in Seattle are the area\u0026#039;s indigenous tribes, some of which traveled down from Alaska to join the demonstrations. Members of the local Duwamish-Suquamish tribe joined the paddlers on Saturday while a banner image of Chief Seattle with the warning that he \u0022is watching\u0022 floated above the action.Protesters take their \u0026quot;Chief Seattle is Watching\u0026quot; sign out on the water toward #PolarPioneer @KIRO7Seattle pic.twitter.com/zY8SPD7QwK\u0026mdash; Alison Grande (@AlisonKIRO7) May 14, 2015\r\nObservers say that Seattle now marks the front lines in the fight against Arctic oil drilling, following the Obama Administration\u0026#039;s announcement last week that Shell could begin exploring for oil in the vulnerable Beaufort and Chuchki Seas—a decision that has been widely criticized for its short-sightedness amid the growing climate crisis.