I'm pretty sure they feel they got what they wanted. ACTION....vs inaction. Now, please don't pretend all old white guys are going to be inactive on issues of diversity and racial injustice. Also, don't assume the next president will be white or even a man. I'm sure they will qualify a candidate more sensitive to the needs of the University student body as a whole.
Universities have been at the front of change, and demonstrations for many many years. It truly is nothing new.
So, please don't imply the efforts were meaningless. Their point was made. If there is a concern, it should be acted upon. If the next president refuses to act, you better believe they can get rid of him just as easy.