It's a common occurrence in the music world - two bands discover they share the same name. What's not common is the way that this was handled.
When a Chicago band decided they wanted to exercise their right to hold the name Future Ghosts over a band from Greensboro, they took direct - and vicious - action. Rather than opt for an amicable agreement (or even attempting any sort of communication or resolution), they sent out an immediate cease and desist action, forcibly removing the Greensboro band's online presence just as they are gearing up for the release of their debut album.
Not only do these actions seem destructive to Future Ghosts, it sets a precedent that could make the whole scene a lot meaner.