This is against my feelings on how a state ought to be run and because of that I have decided to break the law. This affects me and nobody else. If there is a price to pay (fine, jail time) I will be the one paying it, nobody else. I think the big difference between civil disobedience and vandalism is that in the case of civil disobedience you are prepared to pay that price. In this case the moniker 'Anon' indicates to me that the people who are doing this at a minimum hope that they will get away with it without paying the price.
The dutch police are showing that that is not the case, it remains to be seen how eager and open the remainder of this group is to continue. If they sign each packet with their name then more power to them.