Regarding Michelle Obama's 'Extra' interview

Did the statement by Michelle Obama at about three minutes into her "Extra" interview strike anyone as odd? I'm talking about the story we published on the front page here. Watch it here.

At one point she says that voting is the most powerful "non-violent" means for change we have in this country.

Why the "non-violent" qualifier? Could it simply be an extra adjective? Or, is it something else? Is it a shot at conservatives who many like to portray as ready to take up arms if Obama wins again? Is it a gentle reminder to the young people who have been protesting this past year not to do anything drastic should Obama lose? Has she been studying the Declaration of Independence recently and mulling over the "alter or abolish" line?

Why the need for the qualifier?