[Pontiac]

Inside the Beltway has obtained the academy's list of prohibited items for this year's graduation exercises, which, besides ceremonial swords, includes umbrellas.

That’s a mighty wicked looking umbrella you have there sailor. Don’t point that thing at me!

[Polynikes]

“That’s a mighty wicked looking umbrella you have there sailor. Don’t point that thing at me!”

This might be what the SS are leery of.
http://www.real-self-defense.com/umbrella1.html