You don't hear about butterfly knives either. Doesn't mean they're not out there. Last hunting show I attended here had a booth selling them. They weren't packing up any to take home with them.
Look, there have been several celebrities caught with weapons of a much more deadly degree at the airport, the only reason this is big news is because he is a rapper.
And, Mr. Smartypants, a retractable baton at the airport is by no means the equivalent of rape so your analogy is way skewed.
No, to me it's a big deal because he is a murderous gang member with more arrests in his past than I have past job references, not to mention a skirmish just a few months back at another airport.
If he weren't a rapper, just a common citizen with this history, 90% of us would be calling him a spacktard.