They should be avoided. if you continue killing partygoers, @The partygoer will add you to his hitlist, meaning partygoers will hunt you down. i don't advise killing any unless you have to.
Took a look at his hit list. Yep, Kee Ellis, your on our hit list. You’ve killed 4 partygoers in a WEEK. Weird advice from a partygoer, but be safe. If we find you, we’ll probably kill you.