Do you guys think a deranged fan shot former Beatles singer John Lennon?

I don't think so.

Call me crazy and paranoid (Like most of us lol) but I think either an undercover agent or a person that was pro-war killed him.

He was strongly against war, and his lyrics and songs moved America and the entire world in a way never before, and the government was terrified of this.

So, could it have been a undercover agent?

I think so.