Former Tottenham Hotspur striker Garth Crooks, an independent trustee at the organisation, has urged black players in Italy to go on strike this weekend unless Muntari's ban is withdrawn, the campaign group said in a statement.
Muntari was booked for dissent after complaining to the referee about the abuse on Sunday and left the pitch in protest during stoppage time, leaving his team to play the last few minutes with 10 men.
The Ghanaian was shown a second yellow card for leaving the pitch without permission, which the Serie A's disciplinary committee confirmed had triggered an automatic one-match ban.
The committee also said no action would be taken against Cagliari because only around 10 supporters were involved in abusing Muntari.
Read the full article on eurosport.co.uk: Kick It Out slams 'gutless' Italian authorities for Muntari ban