A riot stands for tension that has broken loose — feelings or conflicts no longer held in order. Tradition reads it as chaos asking to be understood rather than feared.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.