Finally someone explained the general hysteria on the subject 420. The fact that in our country and in Russia 4/20 associated with other events.
A few crazies have created in various social networks closed group "Wake me up at 4/20", where with the help of different psychological techniques they predispose teenagers to harm themselves, undermine their psyche and leads to suicide. It's all shot on video, streaming live on the Internet and is becoming a serious national problem.
So being in the post-Soviet countries be careful with the phrase 4/20, you may be misunderstood.