But they were always about policy....
Yeah, they always had a platform, but I don't think they were actually all that effective about it.
The good and bad part about policing is that it's a local issue. You can have a big impact on it, especially since local elections are often just a few thousand people voting. Clearly national attention was not being translated to effective action.
EDIT: One of the points the article touches on, but doesn't really talk much about, is the media coverage. And I think the part they're missing is that local issues like this have definitely been harmed by the dismantling of traditional local papers. Trump is always going to be bigger news on CNN—expecting them to replace home-grown media that can have an impact in the community they cover is hoping for the sky to change color.