Not allowed to promote halloween?

Tweet

In the charity shop where I volunteer we have been told that we are not allowed to put out any Halloween products even though we have often been asked if we have any black dresses/sheets that people can use for costumes. It all come about because one of the shops had a Halloween display in their window with a head stone that said R.I.P and someone complained as they said it was offensive. So because of that complaint we are no longer allowed to put Halloween products out in the shop or do a window display for Halloween. It does seem such a shame but I suppose we have to be careful not to upset people. What do you think, should we still promote Halloween? Have you ever been in the situation where you are not allowed to celebrate/promote Halloween due to a complaint?