In fiction, a symbol can be described as : an object that stands for something other than itself
For example, in hunger games, mocking jay became the symbol of Revolution against the capitol
hope this helps
Incorporate what? if you mean their selfs then i would say by giving a spice of them self or make their story have some character that relates to them, but then again the story itself is them already.
Here are about 20 options for a career choice, but I think there are more than just these. Hope this helps!
Probation Officer
Forensic Science Technician
Police Officer
Correctional Officer
Private Detective
Fish and Game Warden
Security Guard
State Trooper
Crime Scene Investigator
Computer Forensics Investigator
FBI Agent
Fraud Investigator
CIA Agent
US Postal Inspector
Immigration and Customs Enforcement Agent
Blood Spatter Analyst
Homicide Detective
DEA Agent
Secret Service Agent
US Marshal
