I've paraphrased the ordinance presented to the Albuquerque City Council for extending the protection of road side memorials or Descansos to Ghost Bikes. Without the legalese, this is a pretty good explanation of how important the suddenly sacred places have become in this region.
The name "descansos" comes from a Spanish term that means "place of rest." The site Descansos.org has some good research on the subject along with photos and stories behind specific sites.
Oh, and the ordinance passed. It is now illegal in the City of Albuquerque to mess with Ghost Bikes. "The desecration or willful defacing or destroying. . " of a Ghost Bike is a criminal offence.