Yellowstone tourists crowd grizzly bears in 'what-not-to-do' moment

A guide in Yellowstone National Park on Monday documented “a prime example of what not to do” as a grizzly bear family crossed a highway lined with tourists.

Andrea Baratte, who captured the accompanying footage, referred mostly to the photographer with the tripod, just yards from momma grizzly as she tried to lead her yearling cubs across the road.

“As much as visitors enjoy seeing grizzly bears in Yellowstone, this is a prime of example on what not to do,” Baratte, who guides for Yellowstone Adventure Tours...