I have several bags with federal insignia on them. They were giveaways at conferences or workshops sponsored in some way by federal agencies. I have so many of these bags that I regularly give them to anyone that even might need one. The 16-year-old neighbor kid has an impressive collection of police and gun schwag that I've brought him.
Someone will have the expected comeback to this, but anyone who was trying to maintain a low-profile LE presence would have to be pretty dim to board with a bag that said, in essence, "I GO TO COP MEETINGS" on the side.