I googled 'karma is dogma' and found this.
Karma vs. Dogma | emerging by Lou Kavar, Ph.D.Karma is a foundational concept or law about actions. It’s found in several Eastern religions including Hinduism, Buddhism, and Sikhism. In its simple form, karma is the belief that actions are part of a cycle of cause and effect. Good deeds lead to positive benefits and bad deeds result in negative consequences.
Dogma is a particular belief or doctrine held by a particular religion. Because of the formulation of creeds, dogma is often associated with Christianity. However, dogma is part of all religions and individual spiritualities because dogma is nothing more than the articulation of a belief. In other words, karma is dogma: it’s a statement of belief about individual behavior.
We’re generally familiar with members of Western religions (Judaism, Christianity, and Islam) who are very rigid when it comes to their respective dogma. The dogmatic purity (or their version of it) is often unreasonable when compared to proven fact or positions supported by evidence. Rigid beliefs often become the foundation of prejudice, oppression, hatred, and wars. In the West, what we miss is that the law of karma is also dogma. When the law of karma is taken rigidly, it also leads to the same kinds of problems that are found in the history of Western religion. For example, India’s historic caste system was based on the law of karma. Oppression of various castes was understood to be morally appropriate because it was nothing more than the karmic cycle. Being of a lower caste was assumed to be the result of bad deeds in a previous life. It’s really much the same as the dogma that contends that positive thinking about prosperity or health results in financial gain or a lack of disease. They are all just various dogmatic statements.