The choice now is whether to believe that law enforcement at the local and federal level simply turned a blind eye, or they knew and helped guide this individual to action in order to use the public reaction to advance the gun control agenda.
And while some will recoil at the thought of organized terror attacks in the US, we have to acknowledge that terror attacks by the state are not unprecedented. The communists, the nazis, the current russian empire all utilized terror attacks to advance their state policy. For example, right before the Crimea referendum to join Russia, terror attacks against the civilian population “were discovered” by FSB forces that swung their support to joining Russia.