Moby mate, there's a recession on & that being the case you need as many people on your side as possible, look how many boozers are folding on a regular basis, you need to have a word with your boys & explain to them the benefit of tact & not bullishly & mindlessly following rules, the "I'm in charge here" attitude pishes people off right proper.
Perhaps requesting to see what's under the hat & then letting them put them back on as opposed to demanding removal or else, would your lads demand this of a Seikh ? Or would that be seen as provocation ? Sadly in this day an age we have to administer a touchy feely attitude to all & sundry regardless of your views & attitudes. So I suggest you educate your Boys, sooner rather than later or you'll be on here posting your closure notice.
It's just a word to the wise, has this helped ?