Usually, there is an actual reason why you can't transport one thing or another over state lines. Generally, that reason is to prevent invasive species. In the case of marijuana, I believe the reason for those laws were first passed was literally to keep negros and shifty mexicans from stealing our white women.
I imagine the reason they brought it was to get arrested and draw attention to what is probably the greatest mass injustices in America. It is a pretty boringly common tactic when fighting unjust laws. It isn't like more words is going to fix a politician who thinks it is a-okay to ruin millions of lives in the name of police budgets, keeping private slavor labor prisons full, or whatever inane reason helps them sleep at night. Nothing but pissed and angry constituents is going to fix the problem and make these conscienceless sociopaths stop brutalizing millions of Americans. Contrasting activist getting arrested while another state legalizes without instantly imploding or having all of their white women stolen is a worthwhile statement.
No, you see, you actually don't have to obey the laws. You can actively break them to draw attention to the injustice. This is a pretty time honored tactic that Americans (among other people) have used to fight gross civil rights violations. I struggle to think of a larger and more obvious civil rights violation taking place right now than infinitely stupid 2nd round of prohibition (which is certainly more dumb than alcohol prohibition).
Probably because those are just laws that attempt to stop invasive species, rather than the most common kludge used to beat the living shit out of vulnerable and poor people, fund police, funding private slave prisons, and fund brutal gang violence.
Can you truly not see how being arrested for breaking an unjust law is not oppression or persecution? Were people who violated Jim Crow laws just a bunch of common criminals and not brutalised and oppressed people being persecuted by the state? If it was the 60's would you be giving us a "no shit, of course those black folks sitting in a white dinner were arrested, what is there problem?" bullshit argument?
So you are telling me that the law is so stupid and obviously not facilitating the public good that they are embarrassed to enforce it when it isn't a black teenager getting a stop and frisked by a NYC cop? Are you suggesting that marijuana DOESN'T result in our white women being stolen by negros? If that is what you are saying you better call you senator quick!
People should scream at the top of their lungs to end prohibition. Nothing but constant shouting is going to end this over half century of brutal and unfathomable injustice. Since the inception of these laws tens, if not hundreds of millions of Americans have had their lives ruined either directly or indirectly. Hell, every American has payed the price in increased gang funding and police costs. People committing public acts of civil disobedience, as this clearly was, are heroes trying to right one the largest injustices in American history. If you can't see the destruction of so many lives and be horrified and want to stop it NOW, you have a disturbing lack of empathy.