already happening in parts of the u.k. i recall. muslim mayors getting elected then banning public displays of pride flags, leftists in shambles.
though to be honest, wanting sodomite flags in public places is a strange hill to die on to begin with. i have problems with islam but "they are averse to and have little patience for this specific kind of alternative lifestyle" is not among them, for many reasons among which is the rampant sodomy within islamic countries proving there's really no there there about their gay hate.
