[buwaya]

I defend ... plausibility.
This case is difficult to imagine as part of a conspiracy.
You have a self-sacrificing “lone gunman”.
Assassins working in the context of a plot are most unlikely to offer their lives like this.

[Openurmind]

“I defend ... plausibility.”

I think you are defending Plausible Deniability.

The more of this defending the powers that be I see when an event happens, the more I am sure it was truly a conspiracy.