[uncitizen]

Something about arms to Al Qaeda....

[American Constitutionalist]

Might have to buy extra big signs unless there is a local ordinance for what size sign people can carry around.
If that's no problem, get the biggest you can carry.
Paint or draw bright colors like orange against a white back ground, or even black or blue against a white back ground.... the point is to get people's attention and keep their attention..
To bad their ain't no way to put portable Christmas lights on the signs.