Keltoi is talking about the "Book Depository Museum".
If you remember all the JFK stuff it is interesting.
Keltoi is being nice with what he said about the drivers.
You will be safe in Dallas as long as you don't go to the bad areas of town. You will know them the second you see them.
The percentage of jerks is higher in Dallas that most anyplace, but they don't go around looking for trouble. So you if you arn't looking for trouble, you will surly not find any.
Have a good trip.