I am an American.  

Under the US Constitution, I don't need a 'permit to assemble'.  My right to do that is under the 1st Amendment to the US Constitution.  I 'don't need no stinking permit'!

"Freedom of assembly, sometimes used interchangeably with the freedom of association, is the individual right or ability to come together and collectively express, promote, pursue, and defend their ideas. The right to freedom of association is recognized as a human right, political right and civil liberty."

Under the 2nd Amendment to the US Constitution, my right to 'bear arms' is also inviolate, since I am not a convicted felon or someone else who no longer has that right.  

And I can do both at the same time.

Deal with it.