My Dear John letter

Dear John McCain,
Let me try to explain to you what the phrase "directly responsible" means. Take this hypothetical situation. Donald Trump is trying to punch Wayne LaPierre in the face. You, John, are holding Donald's arm. Then you let go and Donald's punches Wayne. Who is directly responsible? By your definition, you are. You know if you let go, Wayne's getting face punched. You let go. Ergo, you are directly responsible.
Except, no. At best, you are indirectly responsible. The person directly responsible is Donald. His fists his Wayne in the puss.
Also, Wayne is partly responsible just because he's such a dick.