in the system I am familiar with people support their local churches, and those local churches in turn choose whether to give money to the larger denominational body. If a church disagrees with the larger body, it may choose to withhold support.
Okay - in some other denominations, the church doesn't have that option.
If members of the church disagree with how the money is used, they leave the church.
Yes, I agree that's an option.
In other cases people continue to support their local church by giving 'restricted' funds, than can only be used for things they specify. They might do this if they wish to work to change the church from within without abandoning all that they agree is good about the church.
This sounds to be a bit of an accounting shell game. It may send a symbolic message, but it usually won't affect how money is spent.
If the denomination budgets X dollars for good endeavour 'A' and Y dollars for bad endeavour 'B', an individual member's decision to donate to the "restricted" fund for 'A' may take money away from the pool of general fund that 'B' draws from, but it also partially removes the cost of 'A' from that general fund as well. IOW, it just changes how money is shuffled between pots, not how much actually gets spent on what.
Because all is interconnected, I do not agree with your analysis. By your way of slippery slope thinking, anything at all done to maintain the a church would ultimately be considered support of fundamentalism.
Buy one bottle of aspirin and you support the greed and abuse that can be found in the pharmaceutical industry.
Buy one bottle of Coke and you support the all the abuse and injustices that can be found in capitalism.
Fill your car with gas to take an unnecessary road trip and you support the oil wars.
YES! I entirely agree, and that's my point: we're responsible for the consequences of our choices. The individual who chooses to buy a Coca-cola, to take an unnecessary road trip, or to tithe to a church that funds anti-gay programs isn't responsible for
all of the ills of capitalism, wars for oil or homophobia, but he does share some small measure of the blame for enabling it.
There is good and bad in every human endeavor. We can try to build the good and eliminate the bad. It is a category mistake to throw away all of the good because of the bad, just as it is to hold onto the bad for some tiny good.
But by the same token, if the good can be acheived without the bad, then choosing the mixed option
is choosing the bad... even if the mixed option is more good than bad.
For instance, there are denominations and churches that don't support anti-gay lobbying. IMO, a Christian can't use their desire for community or perceived need for a place of worship as the reason to stay in an anti-gay church, because all those things can be had without the anti-gay aspect.