Join the news democracyWhere your votes decide the Top 100
They may usually reserve most of their hatred for local rivals Southampton, but on Sunday afternoon Portsmouth fans had an altogether different target.
During their League Two clash against AFC Wimbledon at Fratton Park, their first game since the attacks in Paris on Friday, Pompey fans could be heard singing:
Stand up if you hate Isis.
The game finished 0-0.
More: For England fans going to Wembley on Tuesday night: Here are all the lyrics to La Marseillaise