When you turn on your radio, you don't always want to hear about someone shootin' some person. Even if that's the lifestyle they live, people don't always want to hear it.
A molcajete is a stone mortar and pestle from Mexico. They're great for grinding spices and making salsa and guacamole because they give everything a nice coarse and rustic feel. I've never collected anything, but I think I might start collecting these because each one is decorated differently.