There's a video in there - embedding is disabled as per WBAL policy, but you can see it directly from their youtube account. From the article:
Members of Greenpants, an offshoot of the Occupy Baltimore group, projected huge images on the World Trade Center at the Inner Harbor on Sunday, recalling the ideals and calls for social action that rallied them together.
"There are many groups that have been fighting for a long time, and there are new people that have gotten involved since Occupy that, prior to Occupy, didn't think that social change was possible. So, I think more people are aware of their responsibility to be a citizen and to be involved," said Greenpants member Hannah Brancato.