A police officer is traditionally read as authority, rules and conscience. Whether the officer helps or pursues you is taken as how you feel about order and accountability.
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.