Retail display rack

The design consists of the features of shape, ornament, pattern and configuration of the RETAIL DISPLAY shown in the attached drawings. FIG. 1 is a front, left perspective view of a RETAIL DISPLAY; FIG. 2 is a front, right perspective of the RETAIL DISPLAY of Figure 1; FIG. 3 is a front elevation view of the RETAIL DISPLAY of Figure 1; FIG. 4 is a left side elevation view of the RETAIL DISPLAY of Figure 1; FIG. 5 is a right side elevation view of the RETAIL DISPLAY of Figure 1; FIG. 6 is a top plan view of the RETAIL DISPLAY of Figure 1; FIG. 7 is a bottom view of the RETAIL DISPLAY of Figure 1; and FIG. 8 is a rear elevation view of the RETAIL DISPLAY of Figure 1.