Make people carry around a bag to throw their trash in then throw the bag away when there done
This is more like the compass for finding your way out of a geometry book. A mathematical compass (like this one) is used to draw perfect circles. For Donne, it was the perfect metaphor for the long-distance relationship he imagined with his wife. Line 26: The compass is introduced emphasizing two crucial features.
Guilt i believe because when you feel guilty you have that feeling that you did something wrong or hurtful.
That his feelings on race are conflicted