[I got badly griefed]

Dear all,

I just got griefed ivernight while afking

What can I do about it?

I haven`t save my wolrd for days and they destroyed essentially EVERYTHING

This is just too much, they even built a nazi swastica in my main base!

I`m sad and upset and don`t know what I can do, please help

I installed now one "anti-griefing" plugin, but it seems that it can`t do anything as the griefing was prior to its installation