Britain and a few other Western democracies are the only places on earth where Muslims of all persuasions can practice their faith in full freedom. A thick directory of Muslim institutions in Britain lists more than 300 different sects - most of them banned and persecuted in every Muslim country on earth.
A Shiite Muslim can’t build a mosque in Cairo; his Sunni brother can’t have a mosque of his own in Tehran. Editions of the Koran printed in Egypt or Saudi Arabia are seized as contraband in Iran; Egypt and most other Muslim nations in turn ban the import of Korans printed in Iran. The works of a majority of Muslim writers and philosophers are banned in most Muslim countries.
In Britain, all mosques are allowed; no Muslim author or philosopher is banned. More importantly, rival Muslim sects do not massacre each other, as is the case in half a dozen Muslim-majority countries.
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