Frustrated Southend fans called for Kevin Bond to go during the Shrimpers' 3-0 defeat to Rochdale at Roots Hall.
Two goals in as many first-half minutes from Ian Henderson and Aaron Morley set Dale on their way before Callum Camps added a third after the break.
And Dale's convincing victory condemned a pointless Southend to their sixth Sky Bet League One defeat of the season.
Rochdale opened the scoring with a well-worked goal in the 35th minute when Jimmy Keohane's low right cross was fired home by Henderson from six yards.
Just a minute later, Dale doubled their lead when Camps diverted Rhys Norrington-Davies' left wing cross into the path of Morley, who smashed a 20-yard shot into the top left-hand corner of the net.
Camps came close to adding a third at the start of the second half before Southend hit back with Stephen Humphrys having a low shot saved by Robert Sanchez.
But Dale sealed their win in the 77th minute, with Camps converting a left wing cross from Norrington-Davies.