Yeah, except that that isn't happening and would never happen in America. Most of the people who are granted legal marijuana use are people who understand the laws associated with the act well enough to not cause problems like that. In fact, because you can only have a one ounce limit on the amount of marijuana you can carry at a time, the only people who benefit from legalization are people who use it very sparingly, and those who are in actual need of it as a medication.
Regardless, the Police, the Federal Agents, the fucking National Guard are almost always justified in the deaths that they are responsible for. They are trained soldiers who kill only when there is complete necessity, not retards like you who happened to buy a gun. THIS is the problem with libertarianism. A bunch of stupid assholes like to pretend that the world is a paradise for individual freedom, then get completely worked up when the government is MAINTAINING ORDER. THAT'S THE PURPOSE OF GOVERNMENT! Sorry, you're making me mad...But, do you not understand how government works? I'm legitimately not trying to insult you, but you should probably spend some more years on this planet before you try and point out any perceived social injustices.