I've posted on my dirt bike website about this, but its worth promoting more (please crosspost, link, retweet etc).
The American Motorcyclist Association (AMA) has made available a video public service announcement (PSA) regarding the current ban on the sale of youth off-highway vehicles (OHVs), which includes motorcycles and all-terrain vehicles, intended for kids 12 and under.
Please view the video here, and take action if you are an enthusiast!
http://www.dirtbike.ws/content/ama-public-service-announcement-regarding-youth-bike-ban