Agreed. Even though my gut tells me the parents might have
  written the sign (the handwriting style vs size of kid and
  probable age) ... and the tendency for people to use their kids
  in their politics... and that this picture is going viral... all
  coincidental to be an "oh look at this accidental picture we
  found". BUT - all that being said... it *could be genuine* - and
  that is why I share it 'cause it's really cool if it's true.