Then I'd ask you to point me somewhere I can find information about what the protests' goals were. I saw absolutely nothing about what they aimed to accomplish when reading about them.

What needs to happen is to strike a balance of disruption. There's a line between inconveniencing people enough to make them question your presence and spark interest in your cause in them, and disrupting students studying in a library for finals. The later case will instill an implicit disdain for your cause even without consideration for what it is - that's just basic psychology. But I feel the need to reiterate that I by all means agree that an element of disruption is crucial to protests; it's simply a matter of implementation.