Recently PCG released an article discussing a propaganda video promoting the Fatemiyoun Brigade, an organization of Hazaras from Afghanistan who are sent to Syria to fight on behalf of the Assad regime. During the course of the war numerous armed groups from outside Syria have come to Syria to fight alongside the Assad regime.
PCG's article says:
They are recruited from a number of places, but many come from the estimated 1 million undocumented Afghan refugees in Iran and the persecuted Shiite Afghans in Damascus, Syria.The Shiites in Afghanistan also include the Hazara ethnic group which is predominantly Shia.
PCG's article comments on a six minute video promoting the Fatemiyoun Brigade. It does not bother to provide a link to the video.
PCG's article is based on an article from another source. That source article cites a certain organization that used to be listed by the US State Department as a terrorist group from 1997 till 2012.
It is very unfortunate that people from Afghanistan are getting involved in this terrible war in Syria. They have already been enduring many problems and now they face this war, an added component in the terrible time of violence and suffering currently underway in Syria. May peace soon come to Syria.