The Facebook video begins with two Mormon missionaries on the tough streets of Manaus, Brazil, perhaps just trying to bear a little testimony about the LDS gospel with some passers-by.
Then, two men ride up on a motorcycle. One leaps off, approaches the white shirt and tie-wearing pair, appears to pull a gun from his belt and threatens the missionaries as he tries to rifle their pockets.
The taller and heftier of the Mormon emissaries grabs the gun out of the surprised street thug's hand. When the second suspect darts into the fray trying to reclaim the weapon, the missionary throws it over a fence.