In the US, it matters a lot that Christians are, collectively, a majority, because of voting. Christians are not a unified voting bloc, but we have one politica

In the US, it matters a lot that Christians are, collectively, a majority, because of voting. Christians are not a unified voting bloc, but we have one political party that explicitly supports Christianity. It often uses Christianity as the basis of its decisions, to the detriment of non-Christians. It's not as simple as a tyranny-of-the-majority by Christians. There are also some nonbelievers who support them, in a way that baffles many observers because they're often explicitly voting against their own best interests. And there are some Christians opposed to this, though they should be able to use Christianity to support that choice and they don't. This further bolsters the nominally-Christian political party in forcing their version of Christianity on others.