How is it different?
Someone is about to get murdered. Because it is a lot of people and is legal and given the name of abortion does not make it different from someone on the side of the road.
A starving person is holding out their hand in hunger. Do things change because there are many and they're not standing x amount of feet in front of x?
How does who we partner with change based simply on the number of people who need help and where they are instead of the ability of ourselves and others to provide that help?
It is completely different, because if someone is on the side of the road, I do not go round up pagans to help me care for them and minister to them. If someone is hungry, I don't go, "I need a bunch of satanists to help me feed them." I FEED them, or I get brothers and sisters in Christ to help feed them.
You are confusing issues. Its one thing if I HELP an unbeliever, it is another thing if I PARTNER with unbelievers..
Scripture is clear that we help everyone; but we only PARTNER with believers.