In "First Amendment"

Don't you just love a 4-part Supreme Court test . . .

That actually only has 3-parts.

And you only regularly apply 1 part.

Absolutely.

Especially when it is divined in order to allow the Federal Government to continue to send those damned draft-dodging, tree-hugging hippies to the cold hard can.

Learned: What constitutes the exercise of protected expression?

Nope.

Don't burn your damned draft cards, Hippies!

[See United States v. O'Brien, 391 U.S. 367 (1968)]