As Guest Accounts are just a measure for people to check if the Community are friendly or just to feel anonymous. They have their misuses sometimes. Like using them to insult other people's nationality.
I would like to say this to all people who uses guest accounts and maybe to the ModDB Admins, that the guest accounts must be monitored and those who insults someone because of their race (note: I have met several already who hates me because of my race)
I hope this never happens again (or often)