What do the following symbols represent? (Description)

Beetles- Vehicles look like black beetles, a symbol of evil. 

Salamander- A mythic reptile/lizard that was thought to live in fire. It is a symbol of a living entity that endures flames without burning much like the firemen. 

Fire- Fire symbolizes a purifier. It cleans the world of books that would add meaning to people's lives; the state does not want this.

Phoenix: Egyptian mythology; a bird that lives in the Arabian desert for six hundred years and then sets itself on fire, It rises again to renew its life, perhaps stronger than it was before. It symbolizes of immortality.

Books: Symbolize free-thinking, knowledge, and enlightenment.