Action has been taken. There have been modifiers place on the pumkins that affect how they can be deployed and what happens to the monsters after deployment.
Halloween is a time off chaos and havoc. It is the only time off year that embrases death and evil. Yes the deaths are disheartening, but it may be advisable to tread much more cautiously, elicit the help of others, or cower in teh temple. The pumkins offerr treats as well as tricks. They are indiscriminant on who they dole out there tricks to.
There are rules in place to deal with the repeated harassment by players, but there is also the responsibility of people to watch out for the "evil" ones that creep up behind you and for any bogeymen that hides behind a bush.