Exactly.
S-F needs to reign in these street gangs or else they will loose credibility. Doesn't matter that they are some sort of splinter anything. These people claim to represent nationalist concerns so the nationalist community needs to reign them in- their responsibility.

Not only was there restraint but it was known that petrol bombs etc were being put together and yet no one did anything-

The nationalist community at large should be the first line of defense and the nationalist community bears the responsibility for any group acting in its name. They should compensate the victims of the violence against police and a peaceful, legal, non confrontational parade.

Conrad