Wait'll they refuse to perform mouth to mouth on some drunkard who's drowning.
In America you have muslims cab drivers who refuse to transport passengers who have alcohol (say unopened bottles of wine).
In England you have police/bobbies who refuse to guard the Israeli Embassy.
I guess you can work in a public service industry and still pick and choose who you'll serve.
Just wait until a man or woman drowns because the female or male Muslim lifeguard on duty refused to touch them.