Cryptic

[pjgriffo]

What the director called fringe movement needs no introduction (6) A - T - O -

[JJ109]

Action

[Sam1960]

action ?

[JJ109]

I am struggling with the parsing though!
Action = what the director called
act 1 = introduction
no movement = on
at the fringe = at the end
Best I can do for parsing

[goodgoalie]

(f) action

[pjgriffo]

Thanks JJ and Sam. I thought of that --but what's the logic?

[Mamyalynne]

Fringe movement - Faction, remove the start

[goodgoalie]

A faction is a political fringe movement