In Yuba City, California, of all places. The Appeal-Democrat, a local paper, reports:
The day after a violent encounter at the Tierra Buena Sikh Temple in Yuba City left two men stabbed and a third assaulted, temple leaders were trying to move on and figure out how to prevent a reoccurrence.
Firstpost (India) adds:
The [temple's] board members leaving the parking lot were apparently confronted by a group of men and attacked with shovels, broom handles and sticks, as two groups of over 30 people clashed with each other.
Thanks to Prof. Howard Friedman (Religion Clause) for the pointer.