They enforce their authority on others, by force when necessary they are "authoritarian". Being accountable to their supporters in their areas doesn't change that. Until their is a global overthrow of class society by necessity their will be power structures where one class has authority and another doesn't. All governments/movements/classes that have been or are, are "authoritarian".

This renders authoritarian a useless term for analysis and as such has relegated it to being used to paint groups/movements/governments as evil or immoral should they stand outside liberal sensibilities.