From the actual DEA document:

In October 2005, Denver voters passed Initiative 100 decriminalizing marijuana based on incomplete and misleading campaign advertisements put forth by the Safer Alternative for Enjoyable Recreation (SAFER). A Denver City Councilman complained that the group used the slogan ―Make Denver SAFER‖ on billboards and campaign signs to mislead the voters into thinking that the initiative supported increased police staffing. Indeed, the Denver voters were never informed of the initiative??s true intent to decriminalize marijuana.