According to D&C 134: 5, “sedition and rebellion are unbecoming every citizen.” So, according to this, gathering to support the destruction of Big Ben would be very bad indeed.
But, read on: “sedition and rebellion are unbecoming every citizen thus protected” (in their “inherent and inalienable rights by the laws of [their] governments.”) Does this mean that if our inherent and inalienable rights are not protected, sedition and rebellion are becoming? If so, when V for Vendetta asks for anarchy in a fascist UK, would you wear the Guy Fawkes mask? If our governments become evil, should good Mormons go and blow up our nations’ symbols of power? And how “evil” does “evil” have to be for Big Ben to blow?
(Great movie. Utterly bonkers. Thoroughly dangerous.)