Megan McArdle explores positive and negative rights - and how they clash with the Hobby Lobby decision.
In this context, “Do what you want, as long as you don’t try to force me to do it, too” works very well, which is why this verbal formula has had such a long life. But when you introduce positive rights into the picture, this abruptly stops working. You have a negative right not to have your religious practice interfered with, and say your church forbids the purchase or use of certain forms of birth control. If I have a negative right not to have my purchase of birth control interfered with, we can reach a perhaps uneasy truce where you don’t buy it and I do. But if I have a positive right to have birth control purchased for me, then suddenly our rights are directly opposed: You have a right not to buy birth control, and I have a right to have it bought for me, by you.
In other words, your rights don't force me to abandon my rights.