The US is more equal and the poor are more wealthy than most other nations.
When the pitchforks come out overseas in a single developed nation, then it is time to worry. As of now it has not happened in nations with far worse conditions than the US.
An event such as grid failure can force it to happen but as long as most people have food and distractions, they are unlikely to get violent.
You have a good point there, but any kind of discomfort or inconvenience tends to make people angry.
A lot of the population needs some sort of drugs including prescription ones and or alcohol to sustain them.
I’ve seen people yelling and getting angry on a 90 degree day. It can get warmer outside than that.
As long as there are bread and circuses, Caesar is safe....