where are your gloves and your helmet?

I do generally carry a copy of the constitution in my tote bag. Just in case it ever comes up in conversation. I'm not sure quite how it would help, though, since I believe a lot of cops are not very familiar with the constitution, or with the place it occupies in USAn law. So they may well incorrectly believe that a) they are violating the constitution, and b) this doesn't matter, because the order or law under which they are operating somehow overrides the constitution.