Apparently this Hollywood loon, at some point, came down out of her tree:
This time she's protesting the construction of an oil pipeline.
Presumably, Hannah made the 2,754 mile journey from La La Land to D.C. on her bicycle.
Otherwise she runs the risk of being labeled a hypocrite for burning fuel and polluting the atmosphere while protesting the manufacture of fuel that pollutes the atmosphere.
Me? I'd never accuse her of that. I simply see her as being your typical environmentalist nitwit.