How does Ana Castillo use imagery in While I Was Gone a War Began?

Imagery refers not only to the descriptive passages of a poem, but also to an appeal to the senses. The dominant sense in the poem, "While I Was Gone a War Began," is the visual sense, as seen through the mind's eye. Multiple "pictures" fill the poem: Hollywood, Taco Bell, sunglasses, summer wear, a sheikh, John Wayne, Sunday school, a flood, rains, a drought, a blue passport, a plane, a poor African selling trinkets, a Mexican official, a Mexican Indian, a white rancher, a Mexican worker, a vineyard, a vat, a rat, a red sunset over fields, and a city being bombed. Most of these are used for the purpose of comparison, but also to set the scene and to bring to mind instances of injustice that the reader knows.