I'm not saying there shouldn't be any laws on death threats (and I have no problem with the prosecution discussed here). But the fact that the courts can throw out unreasonable incidences of prosecution doesn't justify vague laws. Even if the courts were perfect at doing this (which they're not), the mere fact of being investigated or prosecuted is chilling, can absorb incredible time and resources, and can be traumatic on a personal level. This is especially true where certain communities and populations have a long history of being treated inequitably by law enforcement. Again, not saying there shouldn't be any laws; I'm saying it's not a simple matter to define what constitutes a prosecutable threat and leaving it to prosecutorial and law enforcement discretion causes a huge number of problems.