So, I was Googling rocket trajectories for the Real Space Program, and I found some Youtube videos of a rocket launch. It's put up by a Youtuber who doesn't believe that rockets don't work in space, the earth is flat, there's a "Firmament" stopping rockets from working, etc.
The comments section makes it pretty funny, especially if you look at his other videos.
Now: what would you say to these types of people if you met them in person? How would you react? Would you try to explain this to them, or punch them, like Buzz Aldrin?