When we drew 3-3 at home to Man Utd under McClaren, there was a large banner going across the middle of the Gallowgate in the first half that read "Sports Direct Shame" on. It was quickly took down by stewards and the people carrying it ejected from the stadium I think.
EDIT: Scroll down a tad on this and you'll see it. http://www.nufc.com/html/2015-16html/2016-01-12man-united-h.html