http://www.nytimes.com/2011/05/17/us/17scotus.html?_r=1Search Allowed if Police Hear Evidence Being Destroyed
By ADAM LIPTAK
Published: May 16, 2011
WASHINGTON — The police do not need a warrant to enter a home if they smell burning marijuana, knock loudly, announce themselves and hear what they think is the sound of evidence being destroyed, the Supreme Court ruled on Monday in an 8-to-1 decision.
The issue as framed by the majority was a narrow one. It assumed there was good reason to think evidence was being destroyed, and asked only whether the conduct of the police had impermissibly caused the destruction
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