Marijuana prohibition vs. number of arrests

Support decreases over time:


While that draws close to a tie, arrests have skyrocketted:

A recent CBS poll (.pdf) put the number for legalization at just 31 percent, but interestingly if a respondent said "not legal" or "don't know" and was asked a follow-up question:

What if state governments tax the sale of marijuana and used tax revenues to pay for state and local projects, then would you think the use of marijuana should be made legal or not?

Then support for legalization increased by 7 points to 38.

When alcohol prohibition was finally repealed during the Great Depression in 1933, the desire to tax & regulate it was a significant factor.