When the droids are set up for sale for Owen on Tatooine (sorry is spelled wrong), you see the Jawa's setting up R2-D2. Later after the first droid blows his "motivator" Luke asks Owen about "that one" (R2-D2) and it goes back to the same clip of the Jawa's messing with R2-D2, yet the clips in between there are no Jawa's around. At one point they show most of them running away as the humans are walking closer.