For me the easiest tell is the up front, unprompted, and unsolicited declaration of nonpoliticalness. When someone takes the time and expends the breath to announce how nonpolitical they are, what follows is almost always a rant about how everything/everyone else is too political these days, and that of course leads into something between status quo advocacy and outright reactionary/regressive sentiments for some fabled time before those wicked politics were visible to the nonpolitical ranter. 
People that are hostile to service workers. Some just want to take some ideological stand against tipping when the service worker doesn't really have a choice and needs those tips to survive in the current unjust system in a way where ideological purity gestures toward that service worker just look like being a greedy and sanctimonious asshole. The worst of such people will actually declare, shamelessly, that they believe that service workers don't deserve a living wage. The implications of that are 
worthy.
I may get shit for this, but I'll say it anyway: this hair and beard combo, seen on living people. 
I have yet to meet anyone in person with that look that wasn't a chud.
(If one of you is a comrade with that look, I am sorry in advance for the prejudice and if I ever meet you in person I will atone by buying you a drink or something.)
Always love to walk through that logic. Why do hungry people have a higher likelihood of murdering each other? Is it 9 missed meals for an individual or does a group of people need to experience those missed meals collectively? How long can people get by on 2 meals a day without being murdered? How long can people get by on 1 meal a day without being murder? 1 meal every 2 days? What if they’re skipping meals but their kids are fed? If it takes 3 days to reach Murdertown, what happens on days 1 and 2? Is everyone dead on day 4? Are there particular people who tend to be targets of the murder? Is the murder for meat? Is it out of anger? Is a power play? How do you prepare for The Purge But For Real? What should we do to prevent it? What can we do? Why do you think about this so often? Do you think it’s imminent? Why why why why why
I imagine the argument is that they're murdering each other over the remaining scraps of food. Which doesn't seem entirely untrue considering how many wars have historically been fought over farmland and resources.
That being said the idea of most people turning into murderers doesnt seem to fit too well into what happened during actual famines.
I lived in one of the wealthiest places in America during that time. One if the poorest spots in America was two towns over.