Comment: They are riding because

(See in situ)

They are riding because

they love the United States of America and wish to express their patriotism. It is a show of force against our enemies, that regular Joe's throughout the land will step up to defend her. This is a popular protest and show of support. They are protesting a group of people who wish to deny what happened 12 years ago and to shift responsibility away from themselves to another group of people.