Say I smoke marijuana not just because I find it pleasurable but because it is a form of counterculture expression. That is, smoking marijuana is a political act. I think that some in the 60s might have subscribed to that notion. I insist that weed is speech (and why not since money and flag burning seem to be), and the government cannot deny me exercise of that right. How do we square the general right of expression with problematic individual cases like the one above? Surely my exercise will get me arrested in many jurisdictions.