I've given up arguing with them tbh. The proof is there, science proves it happened, yet people will see what they want to see and believe what they want to believe.

I think for many it is a defence mechanism, a kind of way of hiding from horrible things, to them it's easier to pretend its not real.
Let's face it, if the government wants to control by fear, they will create fear to control all......not just the ones they haven't paid off!

The reality of the situation is that people died, others were hurt and many many people felt the repercussions.
Regardless of if it was carried out by 'terrorists' or a branch of the government itself, it was all very real.