Complaint: something that is the cause or subject of protest or outcry

As defined in sense 2a by Merriam-Webster.

Letter: Pornography shouldn’t be viewed in library.  (Buffalo News, 10/3/2012)

Delivered on a soapbox and/or with a bullhorn?

Try speaking this sentence without sounding ridiculously stilted.

Buffalo and Erie County Public Library Internet Safety & Acceptable Use Policy