Google translate of two of the video titles offers variations of:
“Gonabadi Dervishes protest rally in Tehran Pasdaran Street / Sanctions against Kalantari”
Wikipedia has a description of Dervishes as a religious sect dedicated to austerity and poverty.
Below, from Google Translate:
“The united presence of Dervishes against the 102-guard militia; Dervishes call for the release of Nematullah Riahi”
Again, Google translate:
“Dervishes erupt in Golestan eighth to prevent the arrest of Dr. Nourali Tabandeh by the savage criminal”
There are more videos in the Reader’s Links post for Feb. 20 18 of this event.
An hour ago in #Tehran,
It appears that the security forces want to arrest the leader of this minority group who have been persecuted for decades.
Security forces are using live ammunition and tear gas.
— Raman Ghavami (@Raman_Ghavami) February 20, 2018