I have never heard of that law being used, maybe they need to educate the police as to its existence as ignorance of the law isn't a defense only if your a civilian.
Explain to me how advocating for special rights and privileges above and beyond equality, for a specific group of people (especially enshrining them in law) isn't racist. Doesn't matter if it is white, black, native, hispanic, asian, etc.
Equality is something everyone claims to want, but in reality most don't. Most people want special treatment in some form or another.