I do think there will be "unrest". As in, people getting cabin fever, or protesting, or believing wild conspiracy theories.
Remember that Youtube has a ton of disinformation on it, and there are many many people who drink the Koolaid (and even on one channel someone shared out, pay him to give it to him).
That guy in particular kinda scares me, because his videos are 6+ hours long and people actually share them out thinking someone's going to watch. We already know that TV may make the brain more suggestible -- I didn't watch to see just how he was working his con (he looked stoned more than anything else as I skimmed the video to see the "slides" that ranged from 5G towers to naturally produced DMT -- raises another possibility of what drug he'd just come off of), but six hours of BS is apparently getting donations in the popular live stream so people are buying it.
Will society "break down"? I haven't seen it so far.
I do think we are going to have to deal with the segment of the population who is more afraid, for whatever reason, of government than they are of this virus.
For example, people are already saying "no mandatory vaccines". They're looking at movies like Contagion and saying that since bracelets can be forged there will be RFID chips in the vaccines (and vastly overestimating the range/power of chipping technology while they're at it, claiming it's going to "let them track you everywhere". Sure, everywhere there's an RFID card reader and yes that could be put in a database, but no, not by GPS! Heck, you already carry a GPS device on you, your cellular phone!
... sorry, had to get that rant out somewhere. ANYway....
There WILL be resistance to a vaccine the same way there is resistance to "mandatory testing" (when in reality we can't test *enough* people) -- and whether it's home antibody testing or nasal PCR swabs, some people will make it a conspiracy.
Also, churches cannot remain shuttered too long, or people will start going anyway. What can be done? Arrest the pastor? Megachurches have several, and he'd be a martyr. Arrest the congregants? Any unnecessary arrest potentially exposes essential personnel to COVID-19, and mass arrests would essentially turn what was already bad (people singing loudly, potentially spreading droplets much further as demonstrated by some of the church transmissions) into a real petri dish. (This goes for anti-lockdown protests, too -- dispersing a crowd is one thing, mass arrests are counterproductive.)
Supply chain strain/breakdown? That's what I'm seeing right now, and it's not just from people hoarding.
The people who grow/process food, reagents for testing, basic chemicals to make PPE, etc, are classified as "essential workers" like grocery store workers, etc, but we may not think about them in this, nor long-haul truckers -- who may be able to sleep in the back bunk and spend most of their time isolated, but have to touch gas pumps and use the restroom at least occasionally. People with CHLs will be harder to replace than grocery store workers, as will trained people in various factories making essential gear.
And not everyone in manufacturing can do what one company did -- keep everyone onsite for 28 days while making things, to keep them free of COVID-19.
One final thought, on that note. Prison workers (the way prisons get infected) don't want to live on-site, and that's what it's going to take to keep the virus out of prisons IMHO. Corrections officers do not want to feel like they're in prison themselves, but they too are hard to replace from the currently unemployed pool of workers. The potential results of short-staffing and angry/sick/frightened inmates scares me a great deal, particularly for our nurses in corrections.