Protests won't do it? Maybe not - but they did say the same about protests against apartheid in South Africa and women protesting about not having the right vote and the women at Greenham Common, etc.
I don't think all the name calling was ever expected to change anything - but it probably makes people feel slightly better.
Sell it at their price? Maybe they will eventually or maybe they will just continue to run the club into the ground.
What about Bobby Sands and his brown wallpaper?
How did that turn out for him and his chums?
Not all protest is effective.
Not sure what you mean by 'run into the ground;?
Better frugal penny-pinching than the crazy unsustainable reckless spending of many Championship clubs