The term "severe repression" is correct and usable in written English.
You can use this phrase when describing a situation where a group of people has been subjected to harsh treatment, as a result of their political beliefs or behaviors. For example, "The government used severe repression to silence any political dissenters."
Or that in the eleventh and fourteenth centuries, we faced onerous taxes, the destruction of several synagogues, and severe repression?
Most substrates that enter the central metabolism at the starting point of the citric acid cycle, i.e. as acetate or oxaloacetate, caused a severe repression of pigment production, which resulted in unpigmented cells after several transfers in the same medium.
Severe repression followed.
How does the theatre continue its work under severe repression, murder and arrests?
After a period of severe repression and sluggish growth after the crackdown, China rebounded.
Mr. Schifter found "severe repression of all forms of political opposition" in Myanmar.
After the breakdown of the Bohemian Revolt the residents of Silesia, including the Polish gentry in Upper Silesia, were subjected to severe repressions and Counter-Reformational activities, including forced expulsions of thousands of Silesians, many of whom ended up in Poland.
Add economic incompetence and ordinary corruption to severe political repression, and you have a formula for regional instability.
Mr. Frei's murder came at a time when opposition parties and the labor movement were regrouping after almost a decade of severe political repression.
Although interest in Western religion and technology continued to grow, the Sŏhak school met with severe government repression in the late 18th and 19th centuries.
I agree with him that severe sexual repression most likely led to the masochistic sexual "culture" graphically described in the Ryan and Murphy Reports.
