Off course fascism/violence in anyform or by anyone against innocent (be it in past, present or future) should be condemned period regardless whoever it is.... Ajnala Singh group keeps coming up again and again for obvious reasons as they are the ones actually using intimidation, violence beating up people instead of having potency to have simple debate or discussion and also making the videos putting them up online its definitely seems to advertently or inadvertently radicalising sikh youths online , advertently or inadvertently instilling fear mongering, war mongering among minorities who may have different belief as them. But on positive note, it opens door for discussion, introspect, different approach, recommendation, awareness of issues in community among masses.
Nihangs/udasi threaten to use physical violence against kala afghana chelas should be condemned as well. However, they fall short to actually use violence against kala afghana quite the contary actually where we have polite yet firm debate between baba nihal singh ji nihang and kala afghana atleast i m not aware of other such case...But nevertheless, if violent threats are made then there should be condemnation and legal action should be taken. New age taksali themselves are more guilty of using not just threats by actual physical attempted violence against ghagha- kala afghana chelas on tops of it, infront of sri guru granth sahib maharaj, maharaj hazoori.
https://www.youtube.com/watch?v=CxOOsq_19Fw
Anyway i like to keep it simple it as i am looking at this from non partisan politics, fascism/violence in any form or by anyone against innocents should be condemned period regardless of tribal group attachment.