As you destroy them, you see that there were cameras inside. When you get to the one that was on a screen, the screen has a face on it. It says "Why do Republic pawns care at all about this structure? Do you not care about your kind at all? You Jedi are meaningless to your leaders! If you decide to join us, you will be able to reach your full potential of the Force, and win the war." He sure likes to ramble, doesn't he.