A street sign, which poses a logical contradiction, where the sign has presumably been created because of the author's annoyance at causing others offence. The message also echoes one usually directed at Ωliberal elites' - because of their supposed oversensitivity to discrimination and bigotry.
The sign is really a naive effort to deflect criticism for what the author logically interprets as a 'kafkatrap'
http://esr.ibiblio.org/?p=2122 From a conservative perspective, traditionally marginalised groups have used devious means to acquire some sense of social equality (because as we all know, there is a predesignated social order, which positions such marginalised groups beneath those who have traditionally represented status quo values - and so any means to upset this order must inevitably be a perversion/distortion of the 'natural' order).
#CharacterisationWeaknessHypersensitivity