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There are these parties that, once long ago, I used to be invited to where you didn't ... know the host, but you know Joe is having a party. And I can say that long, long ago, marijuana was maybe present at those parties?

U.S. Supreme Court Justice Elena Kagan, during a hearing for a case about whether police were right to arrest 21 partygoers for trespassing.

U.S. Supreme Court Justice Elena Kagan, during a hearing for a case about whether police were right to arrest 21 partygoers for trespassing.

Caroline Cournoyer is GOVERNING's senior web editor.