One other observation about Las Vegas: In the wake of mass shootings in America, another important battleground for activists of all stripes is the race to place blame on who politicizes the event first. Activists believe that whichever party America thinks politicized the event first “loses.”
So it is incumbent upon Republicans to point out if Democrats try to use shootings to enact gun control legislation, and it is incumbent upon Democrats to point out if Republicans try to cover up domestic terrorism. (That is pretty much standard operating procedure for activists in every situation every day, to be honest.)