My question is: why applaud? There are a few possible reasons:
- They were glad that it wasn't themselves being rebuked,
- A feeling of self-righteousness, a sense of populist vigilantism - 'finally that guy got what he deserves!' (there's always that guy in every audience),
- Plain schadenfreude at seeing someone else publicly embarrassed,
- Or, a desire to conform with the wishes of and flatter the dominant personality in the room, viz. the person at the podium.
In any case, these are not particularly edifying reasons and it hence made me uncomfortable that people are so quick to turn against the nonconformist in their midst, whether for good or bad reasons, when given the appropriate encouragement to do so. I'm flagging this incident in my mind, to remind myself to look out for more on the psychology of crowds.