Gerrymandering of districts is an example of a very zoomed out one that ultimately affects minorities in the end but isn't targeting them directly. A great portion of a state might vote Democrat but because of the way districts are drawn up, they'll be represented by way more Republicans. The way Republicans create laws in this day and age tend to favor big business, the wealthy, less government funding for programs that help people, and the like which negatively affect minorities because the vast majority of them either don't fit into the economic circles that benefit from those laws or they're losing benefits from those programs that are getting their funding pulled. There are a ton of other examples that can be brought up and I would suggest checking out the secondary or even tertiary problems some laws bring up.
I think it's funny how you try to frame it as republicans being the only ones who benefit from, and pass laws for big business. They're all motivated by the same shit. If you think one side is noble and is out to do something good, then I don't know what to tell you, because that's preposterous in politics, and you know it.