The many different yet overlapping “terrorist watch lists” are confusing to sort out, and the headlines and hashtags aren’t clarifying it for us (probably because they’re confused too). Momentum has built around the general idea that people on a terrorist watch list shouldn’t be able to buy guns. But which list? The #NoFlyNoBuy push purports to focus on what is called the “No Fly List,” a list of reportedly 10,000 U.S. persons. The No Fly List is a subset of the slightly larger “Selectee List” and both are a part of the much larger “Terrorist Screening Database” (which reports suggest is at 800,000 names and is what some people refer to as the “terrorist watch list”). Last year, a #NoFlyNoBuy bill was defeated because it used both the No Fly List and the larger Terrorist Screening Database to ban gun sales. Conflating these lists is concerning because there are so many known mistakes and lack of due process for correcting them, as the late Senator Edward M. Kennedy discovered. The bigger the list, the more frequent and severe deprivations of liberty become. Senator Kennedy pulled some strings to get his name removed from the No Fly List, but other people had to sue the government and after 5 years, they were awarded simply the chance to petition to be removed (not actually be removed, they had to sue to have their case considered). And that’s just the No Fly List; the larger Terrorist Screening Database shares the same woefully expensive, difficult, and secretive redress process. It’s easy to argue that none of the lists are a good basis for stripping away 2nd Amendment rights. Now, don’t misunderstand this as opposition to the rationale for these bills. Terrorists shouldn’t have guns – terrorists should be in jail. But since we’re talking about it, we need to bring due process into the watch list systems.