http://gtnpnews.blogspot.com/2011/07/grand-teton-national-park-clarifies.html

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The appearance this year of grizzly bears #399 and #610 and their collective five cubs creates unprecedented opportunities for park visitors to view superb wildlife; these opportunities also increase appreciation for animals and national park values. At the same time, the tremendous interest in viewing these bears and other wildlife has resulted in large wildlife jams and caused situations where the well being of both visitors and animals may be in jeopardy. Wildlife viewing opportunities—and wildlife jams in particular—can be very fluid situations due to the unpredictable behavior and movement of animals, the ebb and flow of traffic, and other factors. After a bear charged two different vehicles on two separate occasions while people stood on their car roof, park managers recognized the need to more strictly enforce the established regulations for wildlife viewing to better secure the protection of animals and ensure visitor safety....

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The cure for a fallacious argument is a better argument, not the suppression of ideas.
-- Carl Sagan