- Julian Zelizer: Clinton supporters rightly claimed it was unfair to blow up Sunday's stumbling incident
- But it might be better for her to address the issue head-on, rather than try to ignore it, he says
Julian Zelizer is a professor of history and public affairs at Princeton University and a New America fellow. He is the author of "Jimmy Carter" and "The Fierce Urgency of Now: Lyndon Johnson, Congress, and the Battle for the Great Society." The opinions expressed in this commentary are his.
(CNN)Hillary Clinton's supporters were dismayed when the video clip started to circulate of their candidate stumbling on Sunday as she left a 9/11 event and walked toward her car. The candidate, who is suffering from walking pneumonia, according to her spokespeople, had to cancel her West Coast appearance.