Most serial killers get their start by killing small animals.
zzy opened up with war pigs with the footage like you said. Hitler-Bush Montage. There was also a scene with the clown nose. Some in the audience were booing as if they did not approve of the scense.
Black Label Society led by Zakk Wylde - one of Ozzy's ex guitarists - sent out a tribute to the troops and cursed the terrorists for 9/11. The crowd applauded and some started shouting - USA USA.
Lamb of God - the lead singer had an anti Bush shirt on and claimed that the problems in the world were in part caused by Bush. The song was "As palaces Burn"
Slayer was great as usual.
Hatebreed was the best and sent a shout in support of the troops.
Other bands sent brief tributes to the troops.
The serial killer triad: killing small animals, setting fires, and bedwetting.