Rights of goblins and other magical creatures

[frnsic1]

No: HPFGUIDX 128299

In a re-read of OotP, I noticed Mr. Weasley and Lupin discussing 
Goblin rights (p. 85 US):

"'...if they're offered freedoms we've been denying them for 
centuries they're going to be tempted [to assist Voldemort].'"

What freedoms could wizards and the MoM deny creatures such as 
goblins? What could goblins gain from obeying the "rules" of 
wizards? 

I understand that house-elves "enjoy" serving wizarding families 
(and that they can and do use their own brand of magic, which, in 
many ways is superior to the magic that wizards are capable of), and 
the centaurs consider themselves superior and prefer to be left 
alone, but goblin freedom does not seem to have been explained much 
in canon. 

Any ideas???

frnsic...