soylent green be one of the best and most disturbing science fiction movie of the 70 and still very persuasive even by today standard . although flaw and a little dated and the apocalyptic touch and the environmental premise ( typical for that time ) still feel very unsettling and think provoke . this film quality level surpass the majority of contemporary sf flick because of it strong cast and some intense sequence that i personally consider classic . the new york of 2022 be a depressing place to be alive and with over population and unemployment and an unhealthy climate and the total scarcity of every vital food product . the only form of food available be synthetic and distribute by the soylent company . charlton heston ( in a great shape ) play a cop investigate the murder of one of soylent most eminent executive and he stumble upon scandal and dark secret . the script be a little over sentimental at time and the climax doesn not really come a a big surprise and still the atmosphere be very tense and uncanny . the riot sequence be truly grueling and easily one of the most macabre moment in 70 cinema . edward g. robinson be ultimately impressive in his last role and there a great ( but too modest ) supportive role for joseph cotton ( baron blood and the abominable dr. phibes ) . this be science fiction in my book represent a nightmarish and inevitable fade for humanity . no fancy space ship with hairy monster attack our planet .