Perhaps not 100% but has anyone heard of riots in NORTH KOREA where mass starvation occurs in the peasantry? The threshold for unhappiness there must be very high or the level of fear of getting massacred by the army is greater?
In Singapore, allowing large numbers of Foreign Workers in Little India, Lucky Plaza Area, Beach Road(Golden Mile complex) etc to assemble is just asking for trouble.
A legal assembly of such large numbers can easily deteriorate into an illegal assembly very quickly.