>>From the pictures available, it seems the majority of attendees look too old to be at an Easter Egg roll - hence the speculation that they're rolling some Mary Jane (and I don't mean the peanut butter candy form)
Not what I perceived from outside the gates... only kids and caregivers allowed in. So I googled for images "egg roll White House." Maybe you're looking at the wrong event?
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1
