Yeah, I found that out later. According to some news sources that area was being used as a protester staging area and the protesters were more or less in the way of the folks attending graduation ceremonies. So I really have no idea of the proportion of each.LOL, probably not protestors. There were a few graduations at Toyota Center today.
There were still thousands of protesters. When I think back to the last time the NRAAM was in Houston, when only about a dozen protesters showed up, I find the contrast quite stark.