In his literary work, A Long Way Gone: Memoirs of a Boy Soldier, Ishamael Beah uses symbols to underscore his central theme of oppression and/or freedom.

Question

In his literary work, A Long Way Gone:  Memoirs of a Boy Soldier, Ishamael Beah uses symbols to underscore his central theme of oppression and/or freedom.

for this thesis statement, the three symbols I wana use are Cassettes, moon, and AK-47 gun.
Are these symbols correct?