In the first years of the twentieth century, MacColl was an active opponent of Muslim spokesmen such as Syed Ameer Ali and the Turkish writer Halil Halid and sometimes admonished them on doctrinal points of their religion, arguing for instance that the Sultan of Turkey was not the Caliph of all Muslims.
Muhammad Ali | Hyder Ali | Muhammad Ali Jinnah | Ali | Muhammad Ali of Egypt | Zulfikar Ali Bhutto | Ali Akbar Khan | Tariq Ali | Saif Ali Khan | Asif Ali Zardari | Ali Shariati | Ali Abdullah Saleh | Ali Mohammed Ghedi | Ali Khamenei | Ali Pasha | Ali G Indahouse | Nusrat Fateh Ali Khan | Husayn ibn Ali | Hasan ibn Ali | Ali Imam | Michael Nazir-Ali | Laila Ali | Jebel Ali | Ali Baba | Zine El Abidine Ben Ali | Wajid Ali Shah | Shakir Ali | Mohammed Hussein Ali | Ayaan Hirsi Ali | Ali Ryerson |