People in other parts of the world have been arrested for having stepped on marijuana particles: http://www.npr.org/templates/story/story.php?storyId=18842015 h

People in other parts of the world have been arrested for having stepped on marijuana particles: http://www.npr.org/templates/story/story.php?storyId=18842015 http://www.npr.org/templates/story/story.php?storyId=1884201... America's CP laws are quite similar to this. If you even have a 32x32 thumbnail cached in your browser history, whether or not you were even looking for it, you'll get arrested and imprisoned in most places. I think New York is the only state to have ruled this out and require you to knowingly save it. And yes, people quite frequently have drugs planted on them or have a friend leave something behind without their knowledge and get charged with it.