I'm not a heavy Facebook user, so I can't speak to that; my media consumption is mostly radio and internet and I've heard and read quite a bit about who Sikhs are, what they believe, how to pronounce the name of their faith, local security, and some touching victim stories that sound quite similar to what I heard after Colorado.

*exercising restraint re. a few other issues that have been raised on this thread*
Think of this as 'biting my tongue!