Regarding jerks:  I agree with the dear reader who said that what goes around comes around.  I take great faith in the notion that jerks will eventually get their comeuppance.
By the way, anyone who pronounces "clerk" as "clark" is a jark.  (Oh, a Rodgers and Hart reference.)
Call me a grinch, but I think the holiday decoration and music thing should be limited to the period between Thanksgiving and Christmas.  Okay, maybe New Year's.  One of the things I like about Nordstrom is that on the day before Thanksgiving, the store is "normally" decorated.  You walk in the day after  Thanksgving (not that I would ever, ever go shopping the day after Thanksgiving), and the store is beautifully decorated for Christmas.  I, of course, overlook the fact that a gazillion Nordstrom employees must devote their Thanksgiving "holiday" to decorating the store.  Small wonder I got out of the retail business years ago.
My Jewishness notwithstanding, I love Christmas music and own a fairly sizable collection of it.  Some "Christmas" songs, of course, have nothing to do with the holiday, but relate to snow and cold weather.  I would allow those songs to be played/sung/performed outside of the five week holiday period.
Thus saith I.