The subject of whether genetically modified food is safe or not is not comparable in controversy to the political situation in the so-called "sh*thole" Haiti, relative to the alleged average IQ of its populace.
Note the example provided in the Proposition Document, as to the difference between what is political drama, and what is not.
Politically Dramatic content is content which presents a weighted political perspective that contains a controversial or inflammatory perspective, such that it will have the effect of goading users into participating in a toxic posting environment.
Thus, when you look at your Genetically Modified Food OP, ask yourself a few simple questions:
Am I about to make a political thread?
Is that political thread weighted with political perspectives that skew heavily to one side of an argument?
Would that discussion topic itself generally be considered a controversial topic to discuss as to the reasonable, general public?
If yes to the all of the above, consider then: is my post going to make for a productive discussion, or have i created content which fosters a toxic environment?
These are the questions i'd ask myself, when thinking about making a political thread - this is not some rulemaking standard.
More simply, if you feel a post is on the fence of violating the policy, tone it back. Each of these policy enforcements will be a judgment call from the staff -> there is no boiler-plate yes or no, nor should there be.
My thoughts on your GMO food example is that i think it'd be allowed. GMO food is not really a controversial subject.
i'm not even sure i'd consider that a political conversation, in as much as it is a scientific one.
Even then, there are unsupported conclusions and weighted perspectives such that the thread is just not conducive to balanced discussion. It encourages defensive behavior from those who disagree from the outset, and that is not a good way to begin a dialogue.
i wouldn't intervene, as the subject seems scientific to me. But consider a political question of the same sort, where people have a genuine stake in being right such that it effects their identity, or their wellbeing.
If the subject became, say, eugenics, and the discussion started off "I've been looking into the controversy surrounding genetically superior humans. My conclusion is that ..."
Then, naturally, we should say this is Political Drama, worthy of heightened scrutiny and, likely in that case, a subsequent staff reaction.
My example is an extreme one, and the lines will not always be that clear. Yet, there is a time and place for everything. Ponyville strives to be a lot of things, but the community has decided that Ponyville is just not the place for bloodsport, gladiatorial politics.