[FussyZeus]

> If you're arguing for something you need the full argument.

No you don't. In fact, for many rhetorically primed things, such as opposition to Google, and especially in the realm of activism, explaining over and over why you're doing a thing is often not done because it's not necessary.

Every environmental protest doesn't need to include explanations of the Exxon Valdez and BP's Deepwater Horizon. Once things reach a certain level of cultural "it is known" explaining over and over is not required. If you're attending a protest, you know about these things. If you don't, others at the protest will tell you. If you do and aren't convinced, they aren't interested in reaching you.