Believe it or not, there are a considerable number of socialists out there who would like to progressively curtail private ownership of rental properties.  These socialists are well represented on the Denver city council, who would like to expand city owned land trusts for the whole land area of Denver.  Property taxes would be increased, and current revenue streams would be diverted, to meet this social nirvana.  Then when infrastructure further deteriorates, the mayor and city council will push for a new mill levy and or bond election.  This tax and spend will continue until OPM (other people's money) runs out or if there's a taxpayer revolt.