The message of each story is relatively the same, in that both articles summarize the event, discuss any problems that are occurring and take quotes from protesters at the event.
The differences in the leads affect the tone of each story. The first lead focuses on the reasoning behind the event and the larger issue at hand. It's presented like an overview or observation of the event.
The second lead immediately introduces one of the protesters and tells her story, making it more of a feature story than a hard news report.
The other difference I find is that the second article focuses on the decreased number of protesters compared to yesterday.