I remember the blue-and-white "Stronger Together" signs that were rushed out by the opposition during Brexit that were copied almost exactly by the Hillary Clinton campaign. I'd talk to people who were putting the signs up and although they were allegedly "globally minded" they did not know that the same signs had been test-marketed and failed in the U.K. (You'd know if you read The Economist.)
The feeling behind "Stronger Together" is the same as the bundle of sticks after which Facism is named (the "fasces") each which would break individually but would be unbreakable together.
It's a bad lawn sign because people don't believe it. There is cynicism and an expectation of irony. There is the "fear of a fascist planet", or just the reality that (as K.R.S. One says) "The [police] officer has the right to arrest, and if you fight back he put a hole in your chest".
Yet people sometimes do need to come together to fight a threat and it something we're going to have to figure out how to do with this virus, which is only a fire drill for what to do about global warming.
(update: after a nearly two month interlude, briefly down to single digit new cases, we have now entered a second wave which has hit triple digits. Unemployment hit 3,4% but has since decreased.)