On Easter Sunday tens of thousands of weed-smoking enthusiasts traveled to Denver, Colorado to celebrate 4/20, an annual marijuana appreciation day. Colorado is the first state in the nation to legalize marijuana, regulating it on the level of alcohol. Marijuana legalization activists are now politically motivated to spread the tide of legalization to other states, including Oregon and Alaska where marijuana legalization ballot measures are being introduced this year. At the same time Attorney General Eric Holder has said that he's "tried to adapt to the situation in Colorado with regard to how money is kept and transacted and all that stuff." Overall Holder is "cautiously optimistic" about marijuana legalization.