Why couldn't the people from twin towers survive in time? Because they were working from 9 to 11.
I'm really bothered by your jokes about the 9/11 victims. Do you think this is the right thing to say?
No, that's just how I see all their fault.
Jokes are fun, but the punchline of your offensive statement attacks a group that has historically suffered and endured a tremendous loss. Words matter, and we can use them carefully to express how we feel and then we might actually find ways to understand each other's positions, perhaps even advance our own perspectives.