Halloween Party

-I hear some groups of foreign youngsters in Halloween costumes
get on the commuter train on the Halloween evening and
have a noisy party in the train. Even some Japanese are included.
What a nuisance they are for the other passengers!
-Do they do the same in their own country?
I wonder if they consider the Japanese being generous
toward foreigners even if they don't keep the public morals.
-I also do not feel sympathy for some Japanese
who get so wild on Halloween as if the festival belonged to
their own.
Anyway, as an ordinary Japanese, I wish I would not encounter
such crazy guys on a peaceful weekend evening.