[sokoloff]

Be careful. By excluding causes you disagree with from lobbying, you may well find yourself excluding causes that you do.

Should a group be allowed to lobby to keep/make abortion legal? To increase the number or amount of social support programs? To decrease the number or amount of same? Lobby for civil rights changes that have happened over the last 60 years (and those that still need implementation)? Lobby to increase (or abolish) the minimum wage? Lobby to exclude teaching young-Earth creationism (or evolution) in schools?

Lobbying is inherently done out of self-interest (or at least perceived self-interest). You point to examples where many people don't share that same interest, but if everyone did share the same interests, there would be no need to lobby for those interests, of course...