some years ago, the terrorist group the US government never talks about, called Jamaat ul Fuqra, targeted those they deemed "apostate" muslims, or those they deemed insufficiently muslim, also Hindus, Sikhs, Jews and assorted others, in a string of bomb plots and assassination plots against individuals and temples.
The Jamaat ul Fuqra was headed by a Pakistani named Jilani/Gilani [ I think it still is] and recruits blacks and others in both Caribbean and in the USA into living in little isolated enclaves which frequently have gun ranges and airstrips on them. They also operate the "International Qurannic Open University," and other similarly named fronts.
Their assassins knew very well what the differences were between Sikhs and Muslims and they weren't targeting Sikhs because they were "confused."
jamaat ul fuqra was first exposed in Buena Vista, Colorado. MOA is a corporate front of Jamaat ul Fuqra ; Jamaat ul Fuqra is a front group of Tablighi Jamaat; Louis Farrakhan of the Nation of Islam allegedly belongs to Tablighi Jamaat [even though Jamaat ul fuqra theoretically despises the Nation of Islam]
MOA is associated with the International Quranic Open University [IQOU]