My humble strategy for them to lose sleep over is the zillion dollar question

"If these injections are so safe, why are there hundreds of thousands of medical workers worldwide who have made the well informed decision that they'd rather lose their entire careers and livelihoods rather than submit to these mandates for experimental treatments? Also, how many of their injected co-workers possibly feel the same way but cannot afford to lose their jobs?"

I haven't elicited anything except for NPC angry face meme out of any of them so far.