ThesubtitleofJean-MarieStraubandDanièleHuillet’sfirstfeature,from1965,“OnlyViolenceHelpsWhereViolenceReigns,”suggeststhefiercepoliticalprogramevokedbytheirrigorousaesthetic.Thepretextofthefilm,setinCologne,isHeinrichB?ll’snovel“BilliardsatHalfPastNine,”whichtheystripdowntoahandfulofstarkeventsandfil