This is a very awkward phrase when taken out of context but I'll try... I assume you want to know "What this sentence means." A "manifesto" is a public statement of policy and goals. "Fulminate" is a word that means to strongly protest. Therefore, the sentence "To put out a manifesto, you must want A, B, C to fulminate against 1, 2, 3" appears to mean that you must protest a group of problems (represented by 1, 2 and 3) with policies (represented by A, B and C) that will resolve the problems. That's my best guess... :-)