In a statement on the endorsement, the ACLU explained their reasoning:
In Colorado we believe our laws should be practical and they should be fair. Yet we are wasting scarce public resources in our criminal justice system by having police, prosecutors and the courts treat marijuana users like violent criminals. It is unconscionable for our state to spend tax dollars to arrest, prosecute and crowd the courts, and jail people for possession of a small amount of marijuana, especially when those being arrested and jailed are disproportionately people of color.
Much like Prop 19 in CA in 2010, marijuana legalization in Colorado in 2012 is not a forgone conclusion. There will be a long, uphill fight that may depend a lot on who the GOP has on the ballot in the Presidential race.
A Presidential election will bring – in theory – the highest voter turnout. There will be no better test for marijuana law reform in Colorado than 2012. The 420 Times will bring you more details on events in CO as they become available.