Before I give my answer, I'd like to mention you that I am not an
attorney nor is anything I say here legal advice.
To make things clear, I'd like to show the difference between
trademarks and copyrights:
TRADEMARK: "a name, word, symbol, or device that allows the trademark
owner to dictate its use in identifying a product, eg, logos and brand
COPYRIGHT: "The legal proprietary right to reproduce, have reproduced,
publish, and sell copies of literary, musical, and other artistic
So the logo "Vote for Pedro," as shown by pinkfreud-ga's research
below, is trademarked. But the movie script is copyrighted (because
it is considered a literary work).
However, short phrases are not protected by copyright. Nor are ideas.
From the US Copyright Office:
"WHAT IS NOT PROTECTED BY COPYRIGHT?
"Several categories of material are generally not eligible for federal
copyright protection. These include among others:
Works that have not been fixed in a tangible form of expression
(for example, ... improvisational speeches or performances that have
not been written or recorded)
Titles, names, short phrases, and slogans; ...
Ideas, procedures, methods, systems, processes, concepts,
principles, discoveries, or devices, as distinguished from a
description, explanation, or illustration...."
Copyright Circular 1
I think you have to decide whether "we have no food, we have no
jobs...our pets' heads are falling off!" is a short phrase or an idea
or is it original enough to be part of the scriptwriter's copyright?
Perhaps if you made a profit out of his or her words, you could be
accused of copyright violation. To be on the safe side, you could ask
permission to use the phrase and pay the author royalties.
I hope this helps you decide.
Google Search strategy
Search terms: copyright definition
Search terms: trademark definition
Search terms: titles copyright