I disagree with their beliefs, but to me, committing genocide is a few steps above teaching that homosexuality is immoral. But that could just be because I grew up in a country where freedom of speech is stressed in society, maybe in China murdering thousands of people who follow a "weird" ideology is not considered "bad".

Mostly I was responding to using "injustice" instead of e.g. "violent persecution" and implying that having "their assets frozen" was the worst thing that happened. And implying that a lack of sympathy is somehow relevant in considering the morality of their persecution.

Consider this despicable statement: "Although a lot of injustice was done to followers of Judaism, and most of their assets were frozen, there wasn't much sympathy for the Jewish people in Nazi Germany and they were typically regarded as a bit weird."

These are not at all at the same scale or level of persecution, but nevertheless if you condemn the statement above then logically you ought to condemn the other.