It's apparently not acceptable to kick a Munna a few times for its dream dust thing. However, it IS okay to send out an enslaved animal to beat up the Munna to the point where it's almost unconscious so that you can trap it inside a Pokeball, make it your own enslaved animal, and have it see the light of day only when it's needed to beat up other wild or enslaved animals to the point of unconsciousness, just for entertainment purposes.
They're your friends
Or so we keep telling ourselves...
IMO B/W really hit the sore spot of pokemon. Team Plasma had a very valid point. EVERYONE seems to be in huge denial whenever the subject is brought up by a plasma grunt or N.