Too close to black bears in Yellowstone

[Catherine]

A group of tourists got to close to a mother black bear in Yellowstone National park. They have videos of the event. I can't believe how people are reacting. It is a bear with cubs. They seem unaware that she is dangerous.
http://news.google.ca/news/url?sr=1&ct2=...se&inscr=8

They should have returned to their cars immediately. Better yet, they should not have approached a mother bear with cubs. It look like she has triplets. That is enough to make her edgy as it is without a bunch of tourists getting too close.