I'll agree with you on that part but if this other part is true... "Any sign calling for the firing of the Chiefs general manager is being confiscated, or the fan risks being kicked out of the stadium for the day."
Signs are held up all the time at games. I saw some "Fire Pioli" signs in pictures inside the stadium so I'm thinking this is just some fabrication. If not I want to know why the signs were taken. Other than...big, bad brother Pioli had security take them..yeah that's it!
It's true, there was one fan who actually anchored the initial fire Pioli banner was detained by Arrowhead Security for passing out flyers that said "Fire Pioli." The Chiefs' administration is similar to the Iranian Government.