"a polemic on" is a grammatically correct phrase and can be used in written English.
It usually means a passionate or contentious argument or debate on a particular topic. Example: The professor's lecture was a polemic on the effects of social media on adolescent mental health.
Almond's seductive photographs contain a polemic on how technology and industrialisation has altered nature.
Short on revelation, this memoir qua military history is largely a polemic on behalf of the Army grunt.
In a way, the author of a polemic on marijuana policy suffers from the odd case of having too many facts on his side.
His 2004 series The Power of Nightmares was a polemic on the war on terror and the use of fear by western governments to manipulate the population.
In the end, Pollard offers a polemic on behalf of a polemic, leaving the reader twice removed from understanding a crucial issue.
The imagery unfolds, from a meditation on black girls' braids to a polemic on makeup contouring to an inquiry into waist trainers.
The end is heartbreaking and honest; the rest a beautiful polemic on a place that exists no longer.
His maiden speech as a congressman was a polemic attack on the plantations owned by the United Fruit Company.
Swedish Radio reporter Mattias Berg suggested the Academy's 18 members may have argued over a "politically controversial laureate, such as Adonis," the Syrian poet, whose most recent publication is a polemic tract on political Islam.
As the tone of that last line suggests, alas, it's hard to write a polemic premised on the assumption that your opponents are monkeys without sounding like a particularly high-vocabulary monkey yourself.
In many cases he took the initiative by launching a polemic attack on his colleagues.
