This memorial is to be soon replaced by a new design, and park, as noted here and here.

If you like this design, I made a CafePress T-shirt of it, here, Haymarket Boxers, here, and a Haymarket Memorial Coffee Mug, here

A gallery of a few images of the Haymarket Riot dedication is at my .mac page, or buried on my photo page, such as here or even here. Or look at the photos marked Haymarket at Flickr