The Guardians are a green friendly guild. What that means is we will not attack a green player. This does not mean we can not defend ourselves, attack first when threatened or if a guild/player declares us KoS take the fight to them.
Farming mobs - A green player blood lusts and attacks you. Defend yourself and kill the player. If the player returns and you feel like you are going to be attacked you can go on the offensive, blood lust and attack first.
Moving trade packs - Moving trade packs by sea can be rewarding and dangerous. While dealing with red players and pirates you might also have to deal with some green players trying to steal your packs. If you have an uninvited player on your ship who will not leave and feel that they may be giving away your position, kill them.
Land grabs (demoing plots) - Land is hard to come by, we all know this. Some players will blood lust and kill you before a plot demos in order to cap it. The Guardians do not engage in this behavior. If attacked you are more than welcome to defend yourself. If you feel that the attempt to get land might turn in to a PvP fight you can bring people to help defend yourself while you try to get the land. Just do not start the fight. You also have the option of asking if everyone there would be up for fighting over the land or just click spamming for it.