The most reliable account of the origin of the thin blue line is the story of the thin red line. A red-coated Scottish regiment of the British Army during the Crimean War heroically s… See more

The addition of the blue line symbolism to a flag is claimed by Thin Blue Line USA, a company … See more

The thin blue line flag may be displayed alone or sharing a staff with the American flag, which must always remain preeminent. The thin blue line flag is entirely consistent with the ide… See more

Thin blue line flags and other products are widely available online. Many products are trademarked or otherwise protected even though they are widely copied. Flags and symbols ha… See more