You're racist if you look down on Asian cultures for eating dog meat.
Because racism is worse than torturing an animal
It’s not even racist to to dislike aspects of a culture, especially if the aspects are cruel. Animal torture is a tradition in some Asian cultures. It’s not racist to scorn animal torture. For one thing, not all Asians torture animals.
The attitude that the majority of Africans have towards gays and lesbians is disgusting, and they make it clear it’s “their culture.” That doesn’t mean any decent person would condone anti-black racism, and some black people are great advocates for LGBT rights.
Culture is not an excuse for everything.