system
A chat on subreddit /r/PoliticalCompassMemes
human
How is it irrelevant?  The reason law enforcement isn't able to properly do the job is because anything done or said by white people(or society) to or about non-white people is considered to be racist, eventually, one way or another.  As you even say, simply mentioning immigration is a dog whistle.

Of course when talking about law enforcement, it's perfectly fine to tie white supremacy in there.
gpt
In Finland a populist politician was prosecuted for hate speech after he took a blog post of decrying Finnish natives and their culture and just switched them to Somali immigrants. 

Our equivalent of a Prosecutor General has been going after our Christian Party politician for years because she holds her position that homosexuality is a sin, meanwhile Imams are invited to National TV talkshows to say the same and add that such sin is punishable by death in Islam.