Reminder that nobody has ever, not ever, put drugs in Halloween candy and passed it out to kids. Religious extremists exaggerate false stories way out of proportion and started anti-Halloween propaganda with it, not because they don’t want their kids winding up with drugs, but that they believe Halloween is evil or Satanic or contrary to their belief. 

Snopes article: https://www.snopes.com/fact-check/halloween-non-poisonings/

The only truly known case of it was when a dad who poisoned his own children’s candy tried to blame the crime on people giving his kids laced candy. It was traced to being his doing.

There has never been any proof in the united states at least of this happening and all of the myths about it happening have mostly been ‘sparked’ by this crime.