Treat the people like the children they are. Either go full on shaming or congratulate them for staying in. "Clap for quarantiners" or some shit.
That's the problem though, they already
are shaming people - it's ramped up big time in the government rhetoric of the current lockdown - while using that to deflect from the blindingly obvious fact they didn't go nearly far enough and haven't been clear enough with the guidance on what we should or shouldn't be doing.
Not denying that lots of people are still being willfully irresponsible twats, and I certainly don't disagree with calling out that behaviour, but a culture of shaming "ordinary" people and encouraging a culture where everyone's an anxious curtain-twitcher
[1]/leaving private companies to call the shots on policies like mask wearing in the workplace, while they get away with actual murder, seems to be exactly what this administration fucking loves.
Admittedly I haven't followed all the latest briefings and statements religiously, but I haven't noticed very much clear, constructive advice on specific behaviours, just haughty finger-wagging along the lines of "we told you but now look what you've done".