gun rights: the one thing carl marks wasn't hilariously wrong about

Could have fooled me with the constant twitter treads calling for the imprisonment and even execution of law abiding citizens who own AR-15s. Also "specific sort of used in mass shootings" you mean handguns then since that is the type of gun most often used in shootings overall. Handguns which are also amogst the most used for self defense far more often then they are used for harm.