It seems feasible to me that a reasonable person could see a gallery of the "worst car crashes" as violent, your definition or mine of violent could vary but it does fall under the bounds of what people could understand that term to mean (i.e violence doesn't only mean harm to people).
Glorifying car crashes is definitely in an iffy area (you have to remember that in some places it's not unheard off for people to steal and crash cars for fun).
Glorifying car crashes is definitely in an iffy area (you have to remember that in some places it's not unheard off for people to steal and crash cars for fun).