This is from ewtn website
Council of vienne
25]. It is an insult to the holy name and a disgrace to the Christian faith that in certain parts of the world subject to Christian princes where Saracens live, sometimes apart, sometimes intermingled with Christians, the Saracen priests commonly called Zabazala, in their temples or mosques, in which the Saracens meet to adore the infidel Mahomet, loudly invoke and extol his name each day at certain hours from a high place, in the hearing of both Christians and Saracens and there make public declarations in his honour. There is a place, moreover, where once was buried a certain Saracen whom other Saracens venerate as a saint. A great number of Saracens flock there quite openly from far and near. This brings disrepute on our faith and gives great scandal to the faithful. These practices cannot be tolerated any further without displeasing the divine majesty. We therefore, with the sacred council’s approval, strictly forbid such practices henceforth in Christian lands. We enjoin on catholic princes, one and all, who hold sovereignty over the said Saracens and in whose territory these practices occur, and we lay on them a pressing obligation under the divine judgment that, as true Catholics and zealous for the Christian faith, they give consideration to the disgrace heaped on both them and other Christians. They are to remove this offence altogether from their territories and take care that their subjects remove it, so that they may thereby attain the reward of eternal happiness. They are to forbid expressly the public invocation of the sacrilegious name of Mahomet. They shall also forbid anyone in their dominions to attempt in future the said pilgrimage or in any way give countenance to it. Those who presume to act otherwise are to be so chastised by the princes for their irreverence, that others may be deterred from such boldness.
My question: why does pope john Paul II differ in his attitudes toward followers of mahomet and their leaders?
Generally, how should we behave? Like pope john paul II or according to what is stated in the council of Vienne?