City in Chaos is a stage in Street Fighter V.
The stage is set in New York, during the aftermath of one of the Black Moons' electromagnetic pulses, which cut off electricity to the city. Alex is in the background (when he is not selected by the player), fixing his car and observing the fight.
There is a Christmas version of City in Chaos called Frosty Blvd, which was released as part of the 2016 Holiday Content DLC. This version of the stage includes a winter theme with a 'Happy Holidays' greeting on the left side of the stage. There appears to be a snow-making machine as well, with a gigantic Christmas Tree and Santa's sled are also seen in the background. This was most likely inspired by Sean's stage in Street Fighter III: New Generation.