This is yet another example of how laws imposed by Democrats to limit the Second Amendment rights of citizens don't work. Maryland, which has a Democratic governor, has bans on so-called assault weapons, high-capacity magazines, and other gun-control measures, yet this tragedy still took place. This is another case of a criminal committing heinous crimes, not the gun itself being evil.
The odds of a tragedy of this magnitude happening would have been greatly reduced had there been more stringent restrictions on access to firearms. Argote's wife cited his weapons among the reasons she felt threatened by him, and there was a history of him being abusive. Expanded gun laws would keep people like Argote from being armed, but the GOP is resisting these common-sense measures.