When there have been protesters during a Palin speech the crowd has broken into raucous chants of “USA..USA..USA.”
During this disruption of Barry’s speech I heard a limp and pathetic attempt to chant USA that never caught on with the crowd. At least I think I did.
I guess when you hate something you don’t want to shout its name.
I think you heard wrong. Sounds like they were saying "Yes we can."