How does Suzan-Lori Parks use imagery in The America Play, and Other Works?

Examples of Imagery:

"A play is a blueprint of an event: a way of creating and rewriting history through the medium of literature ... theatre, for me, is the perfect place to 'make' history - that is, because so much of African-American history has been unrecorded, dismembered, washed out, one of my tasks as a playwright is to ... locate the ancestral burial ground, dig for bones, find bones, hear the bones sing, write it down."

"Theatre seems mired in the interest of stating some point, or tugging some heartstring, or landing a laugh, or making a splash, or wagging a finger ... as a playwright I try to do many things: explore the form, ask questions, make a good show, tell a good story, ask more questions, take nothing for granted."