When a newspaper publishes an article about a recent scientific study concerning humans, it is almost expected that people with a political agenda will pick and choose parts of the article that support their view, and ignore those parts that invalidate it. The science writers may even intentionally and deliberately insert clarifications and disclaimers to make sure the article is inconsistent with a popular incorrect political view, but people with an agenda will ignore the clarifications and disclaimers because they don’t understand it, they reject nuances, or because they simply ignore information that does not fit into their worldview.
However, sometimes members of the public will also take into account the public’s tendency politicize controversial studies, and then accuse the study’s researchers of “knowing” that their study could be used to support a political agenda and conducting the study with the “intention” to stir up controversy and support said political agenda.
Of course, this is a complete misunderstanding of how scientific research works. Almost all scientific studies are not done to educate the general public; they are done to explore the unexplored territory in the field. The primary audience of a scientific paper is other scientists in the field. Only after the original paper endures years of debate and replications among the scientific community do the new findings make it into the canon of an undergraduate textbook. Most published studies do not make it into this canon, and are read by only a small circle of specialists.
In other words, many members of the public assume that scientific studies are conducted for them instead of for other scientists. Given this assumption, it is not too much of logical leap for them to suppose that the scientists conducted a particular controversial study with the nefarious intention to advance a political (e.g., right-wing) agenda.