Gomen Gari-chan, but I skipped over the spoilers since I'm not completely finished with the manga series yet >w<
But wow. I found this at stage6.com. Someone commented with this article:
Some schools in Shenyang, People's Republic of China have banned the manga after some of their students started to tease friends and teachers by altering a notebook to resemble a Death Note and writing their names in them.
The newspaper Shenyang Night Report called Death Note "poison, creating wicked hearts".Others however, including one major Chinese newspaper, felt that the ban is an overreaction and is inappropriate.
Beijing also has a ban on "horror stories" around schools to protect the "physical and mental health" of students, which includes local adaptations of Death Note.China itself is likewise trying to weed out pirated copies of the books and television series, as well other Japanese horror magazines, where no legal publication house prints it. Wang Song of the National Anti-piracy and Anti-pornography Working Committee has said that the series "misleads innocent children and distorts their mind and spirit
Also:
Belgian murder
On September 28, 2007, two notes stating "Watashi wa Kira dess" (I am Kira, with "desu" being the more literal and correct transliteration of the verb) were found near the unidentified remains of a Caucasian male. Nothing was found on or near the victim besides these two notes. Belgian police are investigating the matter further
Some people are taking this a bit too seriously XD. But I thought it was interesting...