It was probably the late 70s, but the town I grew up in had a breathless scare about razor blades in small candies at an event in the only shopping plaza in town. This is despite the fact there wasn't any such event, there would have been no way for kids to get to said plaza without their parents, and the candies reported to be contaminated were much smaller than anything reported to be in them. This didn't stop the local rag and all the parents from hysterically repeating the story despite none of them knowing anyone that actually had such a candy.