The entire point is that you really can't separate politics and social well-being. Often the most effective way to improve some groups life is through politics. Killing separate but equal for example.
No, the entire point is that political contributions shouldn't be tax deductible, no matter the goals.
I make lots of political contributions with the intent of improving social well-being. I just don't expect to also be able to deduct those contributions from my taxes.
The IRS wasn't preventing these groups from collecting money in support of a cause. It was preventing those donations from being deducted from your taxes.
I'm willing to take that tax hit to help people. It's the Tea Party supporters who hate taxes so much that are making a big deal of the fact that they can't get a deduction on their taxes on contributions made to elect people who will then try to reduce their taxes.
They want to double dip. Screw that. Make sure that the rules are fair in preventing any such political organization from being considered a "social welfare" organization, by all means. But don't let political contributions become deductible, no matter the politics.