I thought it was just awful the way the audience kept carrying on before the 200m men's event. The Greek Champion withdrew long before the event took place, and we will see if a doping scandal follows, so it's not the fault of the athletes on the field, nobody "stole his place". And to boo the winner afterward, so unsportmanlike. Like the BBC comentators repeatedly said; "disgraceful'.
Too bad, they were putting on such a nice Olympics until that moment.