The only people saying Saddam isn't a threat are left-leaning anti-war activists.
Literal
Saddam [subject-が] threat [copula not-で] [or-the-like-など-と] say [topic-のは], reddish anti-war-movement [genitive-の] people [only-くらい].
Political commentary. 赤がかった ('reddish-tinged, leftist,' from 赤 'red' + がかった 'slightly X-colored') uses 'red' as a political color for communism/leftism — same convention as many countries. くらい here means 'only, just about, nothing but' with a dismissive nuance. ~など (particle of dismissal) attached to quoted claims downplays them. Typical of opinion-editorial writing.