The left-leaning anti-fascist movement—or Antifa—has been around for decades, popping up in North America and Europe in response to rising white nationalist or fascist sentiments. Now, Antifa has made a resurgence in the US, where members clad in masks and nondescript black clothing physically confront groups of white supremacists and neo-Nazis who've started organizing in cities around the country. Since the 2016 presidential election, Antifa has become a staple at alt-right and Trump-related rallies that often result in violence. VICE met up with a few Antifa activists in Philadelphia who engage in “Black Bloc” actions to find out more about their ideology, tactics, and individual reasons for participating in a high-risk form of activism. WATCH NEXT: Inside America’s Largest Right Wing Militia - bit.ly/2glqlan Click here to subscribe to VICE: bit.ly/Subscribe-to-VICE Check out our full video catalog: bit.ly/VICE-Videos Videos, daily editorial and more: vice.com More videos from the VICE network: www.fb.com/vicevideo Like VICE on Facebook: fb.com/vice Follow VICE on Twitter: twitter.com/vice Read our Tumblr: vicemag.tumblr.com Follow us on Instagram: instagram.com/vice Check out our Pinterest: pinterest.com/vicemag Download VICE on iOS: apple.co/28Vgmqz Download VICE on Android: bit.ly/28S8Et0