I'd really love for the bikers to be as forthright as possible. There are plenty of things good and decent Americans can do to offend Islam that fall under the category of "Americana". No need to be overtly bigoted. Just get the message across. Lots of bacon. Make sure the Harley/Hog connection is well understood, and the implication delivered. Clever t-shirts and signs. Bible reading for those so inclined. And bacon.
Above all, I desire for this "ride" to be seen clearly as a rebuke of the Islamic freaks who organize to dance on the graves of those murdered on 9/11/01 and 9/11/12. I want sides to be drawn up, and lines to be more clearly delineated after these "counter" events. I want the American people to regain some sense of solidarity against this perverse cult that threatens the world, and to begin to coalesce around the fact that this cult is an enemy, in every regard.
Not many subcultures speak of raw Americana like the biker subculture. It spans ideologies, politics, incomes, and lifestyles. Perhaps the bikers can shake some sense into people.