I was all set to give my yearly rant on Halloween safety, but lifehaker has beaten me to it with a well-written and reasoned article on how we blow the safety concerns all out of proportion (usually with the media's help). So read it and maybe use it as a critical-thinking lesson with your students and children. Use the internet to confirm the claims about the 1974 and other incidents mentioned. Snopes.com is always a fun place to start.
Enjoy the holiday!