“I come from the ‘60s, a long time ago,” Hillary Clinton said at Saturday’s Democratic Presidential debate, in response to a question about student activism. The gaffe has mostly fallen on deaf ears.
Hillary Clinton is 68 years old. She was born October 26, 1947. Here is a visualization showing the age distribution of US Presidents upon assuming the Oval Office.

To date, only three US Presidents between the ages 65-69 have assumed the Oval Office. Once again, Hillary Clinton is 68 years old. She “come(s) from the ‘60s, a long time ago.”
Granted, the US population is aging. However, when selecting Presidents, this aging US population has trended towards younger Presidents.
Age upon assuming Oval Office: Barack Obama, 47 years old; George W. Bush, 54 years old; Bill Clinton, 46 years old.
Hillary wishes to dispel the age perception. HFA recently posted the SnapChat logo wearing a most recognizable pantsuit.

Of all the social networks, Snapchat skews youngest. According to Business Insider, 45% of Snapchat users are between the ages 18-24.
Thus, a strategy has emerged: capture the young mind. Win the unspoiled voter, who is excited by the prospect of casting her first vote. Btw, Hillary uses Snapchat.
Further evidence of the strategy:
Twitter Banner displaying young prospective voters

HFA blog post appealing to youth and “a new age”

We should expect age to become a louder issue as the campaigns unfold. For reference, here are the ages of all the candidates, both Democrats and Republicans. Those between the ages 44- 60 are in bold.
Hilary Clinton, 68 years old
Bernie Sanders, 74 yeards old
Martin O’Malley, 52 years old
Donald Trump, 69 years old
Ben Carson, 64 years old
Marco Rubio, 44 years old
Ted Cruz, 44 years old
Jeb Bush, 62 years old
Carly Fiorina, 61 years old
John Kasich, 63 years old
Rand Paul, 52 years old