Is it okay to continue to work for a (non-defense) federal government agency under an administration hostile to my own moral and ethical beliefs?
This. Try to stay until you are forcibly replaced or your agency has its mission drastically changed.
It still works if the posters are in places that a lot of the people in town would visit. I've seen a lot of small town restaurants/gas stations/feed shops with an area by the front with posters and business cards etc.
The GOP doesn't care about old people or disabled people because they don't have jobs so they don't matter. Eliminating the "weak ones" is their goal.
Prest is such an elegant way to spell pressed