Woman Biker Down: 5 June 2010 I-80 Crash Aftermath
This is a good example of why everyone should:
a. ride with people who know what they're doing; and
b. wear the right gear when riding, especially when surrounded by people you don't know and don't know their riding ability
"This was a bike on bike wreck probably caused by a chain reaction when someone made a bad move in pack formation. This was the second crash of the day." Ladies Motorcycle Clothing
You don't see much in the video, but it looks like they were lucky it wasn't worse.