Heavy fighting continued in the Ukrainian city of Mariupol, as residents shifted across destroyed buildings and shelters in an effort to stay alive. (March 21) Subscribe for more Breaking News: http://smarturl.it/AssociatedPress Website: https://apnews.com Twitter: https://twitter.com/AP Facebook: https://facebook.com/APNews Instagram: https://www.instagram.com/APNews/ ​ You can license this story through AP Archive: http://www.aparchive.com/metadata/youtube/306d0fc663c14f74ab0d964c55c03be8