The phrase "a flashpoint for controversy" is correct and usable in written English.
It can be used to describe a situation, event, or topic that has sparked significant debate or disagreement.
Example: "The new policy became a flashpoint for controversy among community members, leading to heated discussions at the town hall meeting."
Alternatives: "a source of contention" or "a catalyst for debate".
Carter is a flashpoint for controversy, especially about the Middle East, and Demme is likely to take some heat for his mostly admiring treatment of him and, implicitly, of his views.
Since Alvarez & Marsal was hired more than a year ago under a $15.8 million contract to scour the school system for savings, the firm has been a flashpoint for controversy because its contract was awarded without competitive bidding, and because of its role in the decision to change the bus routes.
Scientology has been a flashpoint for controversy almost since its founding in 1954, but particularly in the last quarter-century as some former members charged that they had been bilked and sometimes mistreated by officials of what many refer to as a moneymaking cult.
Little Big Town took home song of the year and single of the year for Girl Crush, a terrific ballad about jealousy that became a flashpoint for controversy earlier this year after a report alleged that radio stations weren't playing the song because of its perceived lesbian overtones.
U.S.-China relations are often a flashpoint for controversy.
"Formation," has been a flashpoint for controversy since its debut as the first single from "Lemonade" in February. .
Jalousie, perched above rich Petionville, has become a flashpoint for class controversy in Haiti recently.
North Star, which has 50 employees and is based in Farmingville, long a flashpoint of controversy over immigrant day laborers, was pouring concrete at the county Fire Academy in November when county officials showed up asking for papers.
Some readers singled out this part of the book as the major source of its controversy, and in a similar vein the very materialist account of "Âme," or the soul, which appeared in volume 1 of Diderot and d'Alembert's Encyclopédie, was also a flashpoint of controversy.
Young was a flashpoint of controversy after getting into a scuffle in a 121-114 loss to the Phoenix Suns, earning a one-game suspension for throwing punches after a hard foul.
Hebron has been a flashpoint for decades.
