One of my mother's former friends was absolutely furious when she found out my sister and I had gone trick or treating and that was basically the end of their friendship and their kids weren't allowed to talk to us anymore, their family began sitting across the room from ours like it's a fucking high school lunch room.
The church started doing "Bible dress up day" on trick or treat night encouraging people to dress up like their favorite Bible character and doing games and shit with candy rewards for things. Some people left the church over it and attendance was low since most people still went trick or treating.
Sad things religions do.
It's always about control.
Yes, but great things friends can do.