Visual argument (three weeks in may)

"Three Weeks in May" demonstrates a visual argument that is meant to inform its audience about the issue of assault. In other words, I am not looking for a summary of details about "Three Weeks In May," but rather an analysis of the tools (line, color, placement, arrangement, etc.) that Lacy uses in her visual representation to effectively explore the issue of assault. What are the larger issues addressed? **Note- There are larger representations of the map, in addition to the image above. If you Google Suznne Lacy's "Three Weeks In May" then click images, these will populate.