MUENSTER, Texas — Social media attacks. Intransigent factions. An anonymous letter complaining about the harm done by some neighbors to the harmony of a bucolic Texas town. The division that erupted in recent months in Muenster, Texas, a farming and ranching community north of Dallas, resembles the political polarization that has ripped apart many communities across the nation. But the fight in Muenster, a town settled by German immigrants, has not been about politics. It has been about beer. Si