i will make a suggestion that may or may not work for your area.....

you know there is a ton of propaganda on both sides about who/what the other side is...
anything that breaks that pre conceived notion down is generally a good thing.

therefore i would suggest you consider a skirt, a long skirt, even if worn over flannel pants or whatever..... for many of the more religious groups skirts are the thinsg worn by women they know... and pants are things worn by women who are different.

this wouldnt mean anything here, all the women i know on both sides wear jeans..... but in some areas its a pretty clear marker
skirt=pro life pants= pro abortion

(and no, i dont think thats true, but it is a stereotype in some areas, especially if the protest groups are primarily the born again churches)

IF thats the kind of environment you are in, wearing a visible skirt would throw people a bit.. you would be breaking the "uniform" and making it easier to see you as a "person like us"

like i said, wouldnt work here.... i think jeans are the uniform on both sides