Those who haven't been inside usually pay little or no attention to stuff like this, We might see them and have absolutely no idea what they mean. I just wonder if they stigmatize the wearer and keep them from assimilating with society in general once they get out.
Or do they even care?
A group of pictures of tats and their meanings @ If You See an Ex-Convict with One of These 5 Tattoos, Here's What It Means