https://www.foxnews.com/politics/fbi-probes-possible-ties-national-guard-shooter-shadowy-sect-catalyst-jihad
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Tablighi is an Arabic word that means to "inform" or "convey" and it refers today to Tablighi Jamaat, a global Islamic missionary movement established in 1926 in British India as a revivalist wing of the strict Deobandi religious school of thought that today fuels the tyrannical interpretation of Islam practiced by the Afghan Taliban and Pakistani militant groups. Much like its sister group, the Muslim Brotherhood, established in 1928, and other Muslim groups preaching the extremist Wahhabi and Salafi interpretations of Islam, counterterrorism experts say it acts like a conveyor belt to extremism..."