Some of them might lead by example; some of them do a lot of crazy things to show their faith to the cause.
My take is that it will be the overweight first (after conservatives) because we know that they are already a health hazard and they already occupy too much space on the planet....and the left has started to demonize them already. Perhaps followed by smokers. Then, it will be older people and people with disabilities.
The conservative mantra should be if you are a leftie, you aren’t fit to breathe American air.