The Rangers Supporters Association claimed inaction around Russell Martin is "damaging" the club as it once again demands the Gers boss is sacked.
The former Southampton head coach is under fire from a huge cross-section of the Gers support dismayed by the start to the season.
Rangers' 2-0 home defeat by Hearts on Saturday left the Light Blues in 10th position in the William Hill Premiership , having failed to win any of their first five league matches.
Martin, who took over in the summer, was panned by Rangers supporters throughout the game which confirmed their worst start to a league season in 47 years.
On Monday night, the Union Bears fan group called for Martin and chief executive Patrick Stewart to go while revealing protests have been planned for Saturday's Premier Sports