The theater almost shook with the vehemence of the music-making during the most bitterly angry section of the work , the " Dona Nobis Pacem , " when the Celebrant , here the charismatic baritone Jubilant Sykes , collapses in despair over the inflamed protests of the people he has been trying to reach , who are demanding peace , demanding proof and answers : " Give us something , or we 'll just start taking ! "