That's a really good point. The strongest statement the article had was "stalling hundreds of motorists," and the shutdown was "as a precaution." It's not clear if the gathering or the shutdown "stalled" the motorists.

Sloppy reporting; it's really easy to read that and picture protesters blocking the driveway.

Their rights here should be pretty easy to sort out; they just have to follow the same rules as abortion clinic protesters.