I jumped out of the car almost before it stopped moving to catch up with this sign: "The Experts Agree/Gun Control Works":
"Rights Don't END Where Feelings Begin" — note the rifle-handle for the sign:
Not sure whether the Anonymous crowd is for gun rights, but the masked man's sign, not fully visible in the photo, said "The Only Criminals That Care About the Gun Laws Are the Ones in Office":
A gun-shaped staff for the the American flag along with a dramatic "Come And Take IT" flag:
These two are focusing on the mental illness problem:
This sign had 2 sides. Side 1:
"The beauty of the Second Amendment is that it will not be needed until they try to take it" is a quote attributed to Thomas Jefferson, but according to the Monticello website, there is no evidence that he ever said or wrote that (or the variation ""The people will not understand the importance of the Second Amendment until it is too late").
Out in front of the Hans Christian Heg statue, there were a couple of anti-gun-rights sign-holders. "Keep Your Guns AWAY From Our Children":
This last photo is by Meade, with me posing:
ADDED: Here's the "Wisconsin Guns Across America" Facebook page.
AND: Here's some video I did.