Hang on, there has been plenty of coverage of the atrocities going on ad infinitum around the world and that is exactly as it should be. However, 20 or 30 seconds air-time to give coverage to a peaceful march of 50,000 is surely not beyond the wit of a newsroom?
Peoples' grievances regarding how this country is run or not should surely be covered as an item in the news.
I don't think lack of publicity is what the OP said, rather some coverage, or would you deem the news regarding the madness in the middle-east as publicity?