Comment: The article is right on

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The article is right on

The article is right on principle...

But in the real world it's different. The campaign had to respond to this. Someone was slandering Paul, and the video could've easily be attributed to Paul and/or his supporters. Making an official statement like 'we had nothing to do with this' is not strong enough, so you do the next best thing: the frivolous or symbolic lawsuit!

It's just the best way to disavow yourself. If you're willing to sue over it, you sort of prove that immediately. It's purely a PR-move.