A Taiwanese Presbyterian congregation. I think this could be intended to scare minorities away from the polls, though I do not know the voting patterns of Taiwanese Presbyterians. It is a page right out of the fascist playbook. The shooter was asian, as were the victims, so there may be some completely different motive. Stay tuned.
https://ktla.com/news/local-news/multiple-people-shot-at-orange-county-church-sheriff-says/
asian christians are generally hated by non christian asians. As they should be.