Derek Chauvin, the former police officer convicted of murdering George Floyd in 2020, is expected to survive after being stabbed at a federal prison in Arizona. Chauvin’s attorney is criticizing the prison for lack of transparency and control. NBC’s Maggie Vespa reports for TODAY. Warning: Some of the images may be disturbing. » Subscribe to TODAY: on.today.com/SubscribeToTODAY » Watch the latest from TODAY: bit.ly/LatestTODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: on.today.com/ReadTODAY Find TODAY on Facebook: on.today.com/LikeTODAY Follow TODAY on Twitter: on.today.com/FollowTODAY Follow TODAY on Instagra...