Helmet Law Defense League

The Helmet Law Defense League (HLDL) is a group founded in 1993 that opposes the laws in states which mandate motorcycle helmets. The group contends that mandatory motorcycle helmet laws enacted at the state, county, and municipal levels of government against consumers and users are unconstitutional due to vagueness, and this often results in arbitrary and ad hoc enforcement in those states which have enacted mandatory helmet laws.

Source: Wikipedia — Helmet Law Defense League (CC BY-SA 4.0)